Physics question and answers for December 24, 2023
- Q TYPE questions Each question has 4 choices 1 Read More For the configuration of two charges shown the electric field will be zero from charge Q at distance equals to...
- Q Two identical slabs of a given metal are joined together in two different ways as shown in figures a and b What is the ratio of the resistances of these...
- Q c both are out of phase by 120 d both are out of phase by 180 V V sinoor 16 The phase relationship between current and voltage in a pure...
- Q A beam contains 2 108 doubly charged positive ions per cubic centimeter all of which are moving with a speed of 10 m s The current density is 6 4...
- Q ii a Calculate the mutual inductance between two coils when a current of 4A in first coil changes to 12A in 0 5s and induces an EMF of 50mV in...
- Q 300 C of electricity on solution deposited 2 977 of metal with atomic mass 106 4g mol the charge on the metal cation is passing through the electrolyte a 4...
- Q Q2 Two ribbons are given with the following particulars Ribbon Alloy Length m Width mm A Constantan 5 456 1 0 0 03 Negligible Thickness mm Temp coefficient of resistivity...
- Q a rate of chemical energy consumption of the cell b rate of energy dissipation inside the cell c rate of energy dissipation inside the resistor d power output of the...
- Q 60 An L R circuit is connected to an AC source of 50V rms and frequency 50Hz If the power consumed in the resistor is 150W and the wattless component...
- Q An electric current passes through non uniform cross section wire made of homogeneous and isotropic material If the ja and je be the current densities and EA and Eg be...
- Q one mark for wrong answer A table is given at the ene AC VOLTAGE APPLIED TO A RESISTOR Alternating voltage V is represented by the equation a V t Ve...
- Q a zero b L c 2L d 3L 92 The energy stored in an inductor of self inductance L henry carrying a current of I ampere is a 2 1...
- Q Radii of conductors 1 2 as shown below are r 2r If the resistivity of their materials are same and equal to p then current drawn from the battery will...
- Q no he 12 V 57 Equivalent resistance in 92 between points A and Bis Given r 10 22 www www r www r ww www www r ww 10 9...
- Q 34 In the case of forward biasing of PN junction which one of the following figures correctly depicts the direction of flow of carriers a c P P IIIII 1111...
- Q 54 In the circuit shown the resistance of each resistor is 10 92 then the equivalent resistance in 2 between points A and B is A www ww www ww...
- Q 13 The wires which connect the battery of an automobile to its starting motor carry a current of 300 A for a short while What is the force per unit...
- Q A wire of cross sectional area 5x10 7m carries a current of 2A If number of free electrons per unit volume is electrons is e 1 6x10 19 coulomb 034...
- Q Two bateries are connected as shown in figure Then the reading of voltmeter V is 10V 302 1 2 4 Correct Answer 1 Your Answor 3 Status incorrect 0 8...
- Q A wire of irregular shape turning into a circular shape in a magnetic field which is directed into the paper The direction of induced current is a along abcda b...
- Q 3 A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away from an electric plant generating power at 440 V...
- Q Figure shows a network of capacitors and resistances in steady state Potentials of some of the points are given Then Potential at M 2 6 V Potential at N 1...
- Q See the electrical circuit shown in this figure Which of the following equations is a correct equation for it R www 81 www 12 2 1 1 1 R ir...
- Q When switch S in the figure Figure 1 is open the voltmeter V of the battery reads 3 07 V When the switch is closed the voltmeter reading drops to...
- Q an ionic solution a current consists of rm Ca 2 ions of charge 2e and rm CI ions of harge e traveling in opposite directions Part A If 5 06x10...
- Q A cylindrical tungsten filament 17 0 cm long with a diameter of 1 10 mm is to be used in a machine for which the temperature will range from room...
- Q sphere of radius 2R is joined to 5 a charged conducting sphere of radius R carrying a charge Q The charge which flows between them is 1 2 20 4...
- Q An electrical conductor designed to carry large currents has a circular cross section 2 90 mm in diameter and is 15 0 m long The resistance between its ends is...
- Q A cylindrical tungsten filament 17 0 cm long with a iameter of 1 10 mm is to be used in a machine for which the temperature will range from room...
- Q 33 In the circuit shown below the resistance are given in ohms and the battery is assumed ideal with emf equal to 3 0 volts The resistor that dissipates the...
- Q 39 In the circuit shown the value of I in ampere is 170 4 2 0 69 3 1 0 4 1 5 452 492 ww 4V 40 www 1...
- Q Current amperes 12 10 4 2 2 3 45G Resistance ohms The graph at left in the RI plane shows the current I in amperes for a circuit with a...
- Q 44 In the circuit shown the current resistor is 1 A The potential difference between points A and B is K 5 1 2 V 3 3 20 V 4...
- Q In the circuit shown in figure the battery has negligible resistance Switch S is closed at t 0 Maximum current through battery is equal to Imax at time to Value...
- Q ring having negligible resistance is used to connect four resistors a V resistances 8R 6R 6R and R as shown in the figure Find the equivalent resistance between points A...
- Q Q The number density of conduction electrons in a copper conductor estimated is 8 5 x 1028 m 3 How long does an electron take to drift from one end...
- Q Two wires made of different materials have the same uniform current density They carry the same current only if A their lengths are the same 3 their cross sectional areas...
- Q tion 47 In the given potentiometer circuit length of the wire AB is 3m and resistance s R 4 50 The length AC for no deflection in galvanometer is A...
- Q In a conductor carrying a current we expect the electron drift speed to be A much greater than the average electron speed B much less than the average electron speed...
- Q The current is zero in a conductor when no potential difference is applied because A the electrons are not r B the electrons are not moving fast enough C for...
- Q The current density is the same in two wires Wire A has twice the free electron concentration of wire B The drift speed of electrons in A is A twice...
- Q Why Rundur About Us Blog UZ W resistance between point A and B for network is each branch has resistance R B2 2 R 3 R 5 valent resistance between...
- Q Question 25 192 12 V 202 A www 192 Calculate VB B 5V 292 6 V 3 V M M 4 00 B 352 N M 1 00
- Q ving Chu a 210 mA c 420 mA b 155 mA d 75 mA 2 In the given circuit a galvanometer with a resistance of 70 2 is converted to...
- Q E CENTER Shown is a DC circuit that contains two switches Each switch has zero resistance when closed All of the connecting wires should be considered to have zero resistance...
- Q 12 An arrangement consisting of slabs is shown in the figure When system is placed in situation a with temperature difference is maintained between 1 2 equivalent thermal conductivity of...
- Q 3w An uncharged capacitor is connected in circuit as shown in figure Power ratings of bulbs are given At t 0 switch is closed C B Po Vo B Po...
- Q ves The ross the ad a 7 97 The value of current in the given circuit if the ammeter is a galvanometer with a resistance RG 50 52 is 322...
- Q 98 A galvanometer coil has a resistance of 15 2 and the metre shows full scale deflection for a current of 4 mA To convert the meter into a voltmeter...
- Q Specific res b 6 d 1 5 c 3 94 The conversion of a moving coil galvanometer into a voltmeter is done by a introducing a resistance of large value...
- Q a b 1 4 0 c 2 8 2 d 28 0 87 If the current sensitivity of a galvanometer i doubled then its voltage sensitivity will be 88 a...
- Q In the potentiometer arrangement shown the driving cell D has emf and internal resistance r The cell C whose emf is to be measured has emf E 2 resistance 2r...
- Q 6 Two moving coil metres M and My have the following particular R 10 52 N 30 A 3 6 x 10 m B 0 25 T R 1492 N...
- Q 0 If the galvanometer current is 10 mA resistance of the galvanometer is 40 92 and shunt of 2 92 is connected to the galvanometer the maximum current which can...
- Q In Maxwell s bridge for calculating unknown inductance the various values at balance are R1 1500 Q2 R2 300 Q2 R3 700 02 C1 0 8 F Calculate R4 L4...
- Q 1 A galvanometer of resistance 40 2 gives a deflection of 5 divisions per mA There are 50 divisions on the scale The maximum current that can pass through it...
- Q In the meter bridge circuit shown the null point is obtained at C AC x on the wire AB If the diameter of the wire AB is doubled the position...
- Q Q 29 Calculate the current in the 5k ohm resistance Use Thevenin s theorem only 12 kn 48 V 4 k 0 75 mA 0 75 A 0 75 A...
- Q In the given circuit two cells of different internal resistance 62 and 22 but same emf are connected in series with external resistance R If potential difference across cell of...
- Q A large network is made of regular hexagonal Units as shown in figure If resistance of each straigh section is r then equivalent resistance of network between the points A...
- Q Consider the electrical circuit shown in steady state Electrostatic potential energy stored by the capacitor C is how many times the electrical energy stored by capacitor C PH TA UND...
- Q An ammeter A of finite resistance and a resistor R are joined in series to an ideal cell C A potentiometer P is joined in parallel to R The ammeter...
- Q To get maximum current through a resistance of 2 22 one can use m rows of cells each row having cells The internal resistance of each cell is 0 5...
- Q Example 9 In the circuit shown in figure switch S is closed at time t 0 Find a Initial current at t 0 and final current at t in the...
- Q tiple Consider the circuit shown below Is is constant current source meaning that no matter what device is connected between points A and B the current provided by the constant...
- Q Under steady state condition 10 Q ww 8 V ALA 0 1 F A 2052 192 B 102 ww 20 Q ww 1024 1 Charge on capacitor is 0 4...
- Q Calculate the current drawn from the battery in the given network R 12 www R R 5 25 wwww R 55 www E 4V www OR Two metallic wires of...
- Q In the circuit shown below a voltmeter of resistance 6 kQ is used to measure the voltage drop across 3 kQ resistance then the reading of the voltmeter is 3...
- Q Three identical bulbs A B and C are connected with the voltage supply as shown below When the switch S is closed G increase S Brightness of B and C...
- Q A 4 5 m length of copper wire at 20 C has a 3 m long section with diameter 2 2 mm and a 1 5 m long section with...
- Q a 50 watt 100 watt c 200 watt 150 watt b 100 watt 50 watt d 50 watt 200 watt 1 An electric kettle has two heating coils When one...
- Q The switch SW shown in the circuit is kept at position 1 for a long duration At t 0 the switch is moved to position 2 Assuming IV021 IV01l the...
- Q Example 3 38 In the circuit shown in figure E 10V E 4V 102 and R 20 Find the potential difference across battery 1 and battery 2 E r1 E2...
- Q pass in cascade as shown in figure A voltage source is connected at port 1 Two port network 1 V Port 2 Two port network 2 13 V3 Port 3...
- Q se in ce 99 A potentiometer wire of length 200 cm has a resistance of 20 2 It is connected in series with a resistance of 10 92 and an...
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!