Physics question and answers for December 26, 2023
- Q Final value of 1 if VBE 0 3 V in given circuit 85 Characteristic B 100 6V 10k ww 2k2 ww lkn 12V In given circuit if V 0 3...
- Q In the circuit as shown in figure the 502 resistance develops heat 10 24 cal s due to a current flowing through it Calculate 1 heat developed per second in...
- Q For the circuit shown in figure value of resistance Ris adjusted such that power dissipated in resistance Ris maximum and equal to Po Value of Po is 6 V 10...
- Q For the circuit shown in figure value of resistance R is adjusted such that power dissipated in resistance R is maximum and equal to Po Value of Po is 6...
- Q Three resistor R R and R are connected to a battery of 12 V as shown in figure Calculate heat produced in each of three resistors in 2 minutes 2...
- Q P 8 Current Electricity MEC Magnetis CAREER FISTITUTE 2 Resistors P Q and R in the circuit have equal resistances If 12 ff the battery is supplying a total power...
- Q plz solve it for me main problem is finding series and par allel combinations so plz indicate potentials at every point and make me clear about the combinations thankyou in...
- Q 7 How many different combinations may be obtained with three resistors each having the resistance R 1 3 3 5 4 6 8 Consider the situation shown in figure If...
- Q The resistance of a metallic conductor increases with temperature due to a change in carrier density b change in the dimensions of the conductor c increase in the number of...
- Q A current carrying square loop is placed near an infinite long current carrying wire as shown in figure The torque acting on loop is 1 2 Question Type Single Correct...
- Q 08 1 Resistance of a wire is 34 kf2 5 Write the order of colored rin representing i If ammeter shows a reading of 10A and voltmeter having intern the...
- Q Why 12 In a metre bridge the balance point is found to be at 39 5 cm from the left end A when the resistor R is of 12 5...
- Q Three identical bulbs are figure When switch S is closed the power consumed in bulb B is P What will be the power consumed by the same bulb when switch...
- Q In the circuit shown A The equivalent resistance between the points A and B is 5 02 B The current in the 5 2 resistor is 2 3 A C...
- Q e 11 12 13 14 denote current in the branches Choose the correct option R www www R www 3R E AN www 1 R 13E 2E www 2R www...
- Q and for L to H Across a battery write H on positive terminal and I on negative terminal Across o resistance keep in mind the fact that current always flows...
- Q A small charged ball is hovering in the state of equilibrium at a height h over a large horizontal uniformly charged sheet What would be the acceleration of the ball...
- Q The combination shown in the diagram may be replaced by a single cell of emf and internal resistance equal to 8V 20 Aww 122 5 V 3 V 1Q 4...
- Q 38 Electric potential at a distance 10 cm from the midpoint on a perpendicular bisector of a dipole will be A 10 esu C 0 B 20 esu D None
- Q A secondary cell after long use has an emf of 1 9 V and a large internal resistance of 38022 What maximum current can be drawn from the cell Could...
- Q 1 In case if selected typed opti 0 In case if no response is typed selected Two charged spheres are kept at a finite centre to centre spacing as shown...
- Q 42 Shunt is connected in a parallel combination with a galvanometer of resistance 25092 For times of the total curre value of shunt current passes through the galvanometer becomes A...
- Q For the circuit shown all wires have negligible resistance the battery has a constant internal resistance of r 8 092 and the two light bulbs B and B are identical...
- Q 2 22 A 30 V storage battery is charged from 120 V direct current supply mains with a resistor being connected in series with battery to limit the charging current...
- Q 37 An electron moves along the line AB which lies in the same plane as a circular loop of conducting wire as shown in the diagram What will be the...
- Q All bulbs consume same power The resistance of bulb 1 is 360 3 A B C D 2 Resistance of bulb 3 is 99 resistance of bulb 4 is 40...
- Q A 1200 watt motor has to be operated 12 hours day How much will it cost at the rate of Rs 7 50 u in 12 days 1 Rs 1296...
- Q In the circuit shown in figure the switch S is closed at t 0 and it is observed that the current in R is always equal to the current in...
- Q A 22 65 2 alent resistance between points A and B is A B 802 2002 www B 45 2 2 292 wwww 3092 1502 www 4092 wwww C 5...
- Q In the figure below what is the potential difference between the point A and B and between B and C respectively in steady state 3 F A 3 F 2002...
- Q A car has a fresh storage battery of e m f 12V and internal resistance 2x10 02 If the starter motor draws a current of 80A Then the terminal voltage...
- Q 4 cells of identical emf E internal resistance r are connected in series to a variable resistor The following graph shows the variation of terminal voltage of the combination with...
- Q 3 The same mass of aluminium is drawn into two wires 1mm and 2 mm thick Two wires are connected in series and current is passed through them Heat produced...
- Q 1 The armature of a 12 pole DC shunt generator has 50 slots with 12 conductors in each slot in wave winding arrangement The generator is running at a speed...
- Q 3 When potential difference across a given copper wire is increased drift velocity of free electrons a Decreases b Increases c Remain same d Get reduced to Zero 4 Two...
- Q questions Each question has 4 choices 1 Read More ne V l characteristics of a non ohmic device the figure Which region represents the nega sistance region J OA AB...
- Q a battery the charge will move from one terminal to another Th O the battery is perfect O the battery in not perfect it has a built in internal resistance...
- Q A galvanometer of resistance 1000 contains 100 division It gives a deflection of on division on passing a current of 10 A Find the resistance to be connected to it...
- Q A truncated conical conductor of resistivity P length and cross sectional radii a and 2a are connected to ar ideal battery as shown The current through battery is 4a V...
- Q An electric generator is supplying a current of 80 A to a frill of bulbs each of 50 W connected in parallel Each bulb is giving its maxi output The...
- Q An electric field is applied to a semiconductor Let the number of charge carriers density is n and the average drift speed be v If the temperature is decreased TU...
- Q In the circuit shown above the key is pressed at time t 0 Which of the following statement s is are true 40 F 5002 2502 20 F Key 5V...
- Q 11 8 Three bulbs A B and C are connected as shown in Fig below What changes occur in brightness of the bulbs when the switch is closed 4 Mark...
- Q A charged particle having q and mass m accelerated by a potential difference Vo enters inside a parallel plate capacitor parallel to length 1 of plates at midpoint of its...
- Q A small ball of mass m suspended by an insulating thread hangs at height habove a large horizontal conducting plane It performs small oscillations When a charge q is imparted...
- Q 16 ohm s law is obeyed by many substance but one can t say that it s a fundamental law of nature It s a basic law regarding flow of...
- Q According to Faraday s law the current induced in a conducting loop that is moved in a uniform magnetic field is Increased Decreased Non zero constant Zero In the circuit...
- Q 9 6 A current i is flowing through a resistance R connected to a primary cell having some internal resistance Now R is reduced to half its value The new...
- Q 6 3 In the circuit shown below the resistance of R2 is decreased Then Mark only one oval 0000 ER current through R1 increases current through R1 is constant voltage...
- Q Find the equivalent resistance in 2 between the terminals A and B as shown on the diagran below Put R 1202 r 80 and neglect the resistance of leads R...
- Q A voltage source whose open circuit voltage is V has an internal resistance r The maximum power it can deliver to an external load connected across its output terminals is...
- Q what will be the magnitude of rhe voltage across the capacitor at a time 21 4 seconds after the switch is closed 50 0 V R ww Consider the circuit...
- Q Case 3 In an series LCR circuit power dissipated is given by P V msms cos 1 Xc XL R power is dissipated in the resistor only where tan v...
- Q Question 4 The given circuit consists of two ideal batteries two fixed resistances and a variable resistance R Resistance R is adjusted so that power consumed by it is maximum...
- Q 1 A potentiometer circuit has been set up for finding the internal resistance of a given cell The main battery used across the potentiometer wire has an emf of 2...
- Q it has a wire of low resi 8 In a potentiometer experiment the balancing with a cell is at length 240 cm On shunting the cell with a resistance of...
- Q The resistance of a wire is 24 ohm It is so stretched that the new length becomes times Then new resistance of the wire will be 24 se u wore...
- Q A wire of area of cross section A is made of metal P and carries current I If density of the wire is p mass of an atom of metal...
- Q Three equal resistances each of 10 Q are connected The maximum power consumed by each resistor is 20 W The maximum power consumed by the combination is A 60 W...
- Q In the circuit below the cell is ideal with emf 2 V The resistance of the coil of the galvanometer G is 1 Q The steady current through the galvanometer...
- Q R 2 5 A potentiometer wire has length 4 m resistance 8 The resistance that must be connected in series with na to get 330 R za the wire and...
- Q You have a microammeter which reads 50 A at full scale deflection and the coil in the meter movement has a resistance of 20 ohms By adding two resistors R...
- Q A heating element is to be constructed from a piece of wire of resistance 600 22 by cutting the wire into a number of pieces of equal lengths and joining...
- Q In a uniform solid cylinder of radius R conductivity increases linearly with the distance as we move from the axis to the surface of cylinder from o to 02 Current...
- Q In the circuit shown here what is the value of the unknown resistance R so that the total resistance of the circuit between points P and Q is also equal...
- Q resistance is sm 6 Assertion In case of potentiometer experiment if emfs of both known and unknown batteries are made two times null point length will remain unchanged Reason Null...
- Q Find out the equivalent resistance of the given combination of resistors Hence calculate the amount of current flowing through the circuit V1 6 R1 3 R2 R3 R4 6 R5...
- Q A uniform wire of resistance R is bent in the form of a ring Four points A B C and D are marked on the ring as shown in figure...
- Q A VS 4 A filament bulb 500 W 100 V is to be used in a 230 V main supply When a resistance R is connected in series it works...
- Q 4 A cube of side having resistance R is cut into equal small cubes If all small cubes are arrange in a series combination then the effectiv resistance of the...
- Q 7 The resistance of a voltmeter is 180 22 When there is 5 V potential difference across its ends it gives full scale deflection What resistance should be connected in...
- Q An LCR series ac circuit is at resonance with 10 V each across L C and R If the resistance is halved the respective voltages across L C and Rare...
- Q wwwwwww Up to n B www www Up to n 1 the smallest resistance that can be obtained by ten resistors
- Q Q1 Judge the equivalent resistance when the following are connected in parallel i 10 and 106 0 ii 1 0 and 103 02 and 106 0 3 Draw a schematic...
- Q 52 A wire has a resistance of 5 5 Q at 19 oC and 21 5 Q at 200 oC Find the temperature coefficient of resistivity a of the material...
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