Physics question and answers for December 20, 2023
- Q A cell of emf 1 8 V and internal resistance 2 ohm is connected in series with an ammeter of resistance 0 7 ohm and resistance of 4 5 ohm...
- Q 11 One end of a Nichrome wire of length 2L and cross sectional area A is attached to an end of another Nichrome wire of length L and cross sectional...
- Q 2 Two resistors R 500 of resistances R 300 3 2 and 4 2 are connected in series The equivalent resistance of the series combination is a 800 1 2...
- Q 44 A battery of emi Eo long uniform wire having resistance 4 92 m The cells resistance 2 Q2 and 6 2 respectively are connected as of small emfs E...
- Q For a black body at temperature 727 C its radiating power is 60 watt and temperature of surrounding is 227 C If temperature of black body is changed to 1227...
- Q sed in an experiment 46 The diagram to determine the emf and internal resistance of the cell C A graph was plotted of the potential difference V between the terminals...
- Q given in 42 In the circuit shown the resistances are ohms and the battery is assumed ideal with emf equal to 3 0 volts The resistor that dissipates the maximum...
- Q c R3 between any two resistance 3 In the diagram resistance across junctions is R R Equivalent terminals A and B is assume P and Q also as a junction...
- Q A 1 F capacitor is connected in the circuit shown below The emf of the cell is 2 volts and internal resistance is 0 5 ohm The resistors R and...
- Q In circuit a the instruments read U 100V I 5uA In circuit b we have U 25 mV I 2 5 A What is the internal resistance of the cell...
- Q 444 RA R3 R5 R R Consider the following electric circuit i Which two resistors are connected in seri es ii Which two resistors are connected in par allel iii...
- Q A millivoltmeter of 25 millivolt range is to be converted into an ammeter of 25 ampere range The value in ohm of necessary shunt will be 1 1 3 0...
- Q There are two concentric metallic spherical shells of radii a and b such that a b An ideal cell of emf is connected across the two shells The medium between...
- Q 5 In the primary circuit of a potentiometer a cell of E M F 1 V and a rheostat of 1502 are connected in series If the resistance of the...
- Q A finite chain of resistors is shown in the figure All the resistors in the chain are of the same value A current of 1 4 flows through the last...
- Q A battery of emf 5V and internal resistance 52 is connected across a long uniform wire AB of length 1 m and resistance per unit length 5 502 m Two...
- Q In the voltmeters and the ammeters will be 10 Q V 10 V Circuit 1 102 102 www H 10 V V 2 Circuit 2 1 V V and i...
- Q Two 1 transformers are rated as 10 kVA 400 200 V and 5 kVA 400 200 V respectively The resistance and reactance are 0 04 j0 05 and 0 05...
- Q Two coils P and Q are connected in series in one gap of a slide wire bridge and the null point is obtained at midpoint of the wire by putting...
- Q A rk of eight resistors numbered 1 to 8 each equal to 292 connected to I a 3V battery of negligible internal resistance The current I in the circuit is...
- Q 12 13 14 For question numbers 11 12 13 and 14 two statements are given one labelled Assertion A and the other labelled Reason R Select the correct answer to...
- Q An electric circuit consists of a battery emf E 110V with internal resistance 50 and two resistors connected in parallel to the source as shown in figure Determine the value...
- Q The resistance thermometer of the wire in the platinum resistance at ice point is 5 22 and at steam point is 5 25 2 When the thermometer is inserted in...
- Q 26 For the circuit shown below calculate a the value of resistor Rx such that the total power dissipated in the circuit is 2 5 kW and b the current...
- Q 21 Effective resistance between point A and B for following network is each branch of resistance is 1N www Answer 1 www 0 0000 www A Accepted error B Explanation...
- Q 4 The network PORS shown in the circuit diagram has the batteries of 4 V and 5 V and negligible internal resistance A milliammeter of 20 0 resistance is connected...
- Q V www www R 16 A resistor of resistance R is connected in a circuit to two identical batteries The circuit also contains switch S and ideal voltmeter V as...
- Q PASSAGE I Two cells of 2 V each are connected in parallel An external resistance of 0 5 22 is connected in series to the junction of two parallel resistors...
- Q A constant voltage is applied across a wire of constant length How does the drift velocity of electrons depe on the area of cross section of wire
- Q A wire of length 100 cm carries a steady current i The potentials at the ends of the wire is 4 V and 20 V The value of potential at...
- Q Consider the meter bridge circuit without neglecting end corrections If we used 10002 and 2009 resistance in place of R and S respectively we get null deflection at 33 0...
- Q There are m resistor each of resistance R First they all are connected in series and equivalent resistance is X Now they are connected in parallel and equivalent resistance is...
- Q A R 5 B R 4 C R 2 2R www D R E 2R 21 R 23 Three resistors are connected to an ideal battery as shown in the...
- Q The figure shows 3n cells connected in series to form a circuit r is the internal resistance of each ce and e is the emf of each cell If polarity...
- Q 10 Calculate the area of cross section of a wire of length 2m its resistance is 250 and the resistivity of material of wire is 1 84 10 6 Qm...
- Q In the circuit shown R R 102 and resistance per unit length of wire PQ 1 cm and length PQ 10 cm If R is made 20 02 then to...
- Q Two bulbs of power 30 W and 60 W are connected in series what will be ratio of potential drop across bulb 1 1 2 2 2 1 3 3...
- Q 55 Five equal resistances each of value R are connected to form a network as shown in figure The equivalent resistance of the network between the points A and B...
- Q 16 Four ammeters with identical internal resistance r and a resistor R are connected to a current source as given If reading of A and A2 is 3A and 5A...
- Q Five equal resistances each of value R are connected in a form shown alongside The equivalent resistance of the network 8 1 Question Type Single Correct Type 2 3 Between...
- Q 4 The current density varies with radial distance r as J ar in a cylindrical wire of radius R The current passing through the wire between radial distance R 3...
- Q The equivalent resistance between the terminal points A and B in the network shown in figure is R R 1 R R 7R 5 R R ww Question Type Single...
- Q 2 From P W t I Q t W QV show that P IV Three resistors with ratings of 3 ohms 5 ohms and 6 ohms are connected in series...
- Q FIX Pre Medical Physics 4 Primary winding and secondary winding of a transformer has 100 and 300 turns respectively If its input power is 60 W then output power of...
- Q Q1 Determine the resistance of a metal tube in terms of the external diameter D the internal diameter d the length and the resistivity p Calculate the resistance of a...
- Q 2 A galvanometer has a resistance of 3663 ohm shunt S is connected across it such that 1 34 o the total current passes through the galvanomete Then the value...
- Q Two coils A of 12500 turns and B of 16000 turns lie in parallel planes so that 60 of flux produced in A links coil B It is found that...
- Q The voltage of clouds is 4 x 106 V with respect to ground In a lightning strike lasting 100 ms a charge of 4 C is delivered to the ground...
- Q In the figure shown each resistor is of 20 ohms and the cell has emf 10 volt with negligible internal resistance Then rate of joule heating in the circuit is...
- Q 10 000 alpha particles pass per minute through a straight tube of radius r What is the resulting electric current The potential difference applied to an X ray tube is...
- Q 1 Alternating current cannot be measured by d c meter because a a c cannot pass through a c ammeter b a c changes direction c average value of current...
- Q Progress Two resistors 47 2 and 49 30 are connected in parallel The current through the 49 3 Q resistor is 4 06A a Determine the current in the other...
- Q Two bulbs B B each having resistance 50 2 are connected according to the figure Which bulb will glow with more brightness B 1 B 3 Both equally R 5092...
- Q in the circuit shown which of the following statement for CORRECT 3 0 2 2 4 V 10042 sin 377 R 1000 X 1000 www ART Power factor of the...
- Q Two resistors have resistances R smaller and R larger where R smaller R larger When the resistors are connected in series to a 12 0 V battery the current from...
- Q A solar cell generates a potential difference of 0 1V when a 250 Q is connected across it and a potential difference of 0 3 V when a 1000 Q...
- Q 20 Which of the following statement is correct a Kinetic energy of a system can be changed without changing its momentum b Kinetic energy of a system cannot be changed...
- Q 12V R 1002 M SR 200 R3 15022 B Ry 2502 R5 100 C R6 3002 a Find the current flowing through each resistor ie resistors R1 R6 2 Knowing...
- Q Two identical point charges are kept at a distance d third point charge is placed on the perpendicular bisectc of the two charges at a distance x Show that the...
- Q A wire with a length of 150 m and a radius of 0 15 mm carries a current with a uniform current density of 2 8 x107 A m The...
- Q A certain capacitor in series with a resistor is being charge At the end of 10 ms its charge is half the final value The time constant for the process...
- Q A galvanometer of resistance 3 9952with a scale divided into 150 equal divisions has current sensitivity of 10 divisions per milli ampere Find shunt resistance for making an ammeter of...
- Q circuit given in figure 1 and 2 are ammeters Just after key K is pressed to complete the circuit the reading will be 1 R www R mmmm wwww 3...
- Q 7 In the circuit shown in figure find i ii iii iv the current in the resistor R the value of resistance R the unknown emf If the circuit is...
- Q A 120 V power line is protected by a 15 A fuse What is the maximum number of 120 V 500 W light bulbs that can be operated at full...
- Q Figure shows a circuit containing three resistor X X X having resistance R each an inductor capacitor and an emf source having inductance L L capacitance C emf respectively Given...
- Q 5 1 1 volt 3 3 volt X X A X OZZAZZ X X X X X The e m f induced between points A and B of the rod...
- Q 4 A particle of mass m is projected upwards with V velocity v 2 where v is the escape velocity e e then at the maximum height the potential energy...
- Q a A capacitor has a capacitance of 30 F which is connected across a 230 V 50 Hz supply Find a capacitive reactance b rms value of current c power...
- Q A frame made of a homogenious wire is shown in figure The number of successively embeded equilateral triangles with sides decreasing by half tends to infinity The side AB has...
- Q 3 A capacitor charges from a cell through a resistance the time constant is T In what time will the capacitor collect 10 of its final charge 1 Tlog 0...
- Q A current of 0 20 A passes through a 3 0 ohm resistor The resistor is connected in series with a 6 0 V battery and an unknown resistor a...
- Q A 10 m long potentiometer wire is connected to a battery having a steady voltage and negligible resistance A leclanche cell is balanced at 4 m length of the wire...
- Q 59 Six resistors each of 10 are connected as shown The equivalent resistance between points X and Y is X Yo 1 20 S 2 5 W www 3 25...
- Q L 3 1 x 106 A 4 1 x 10 A 11 The current in a conductor varies with time t as 1 2t 3t A where I is amperes...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!