Physics question and answers for December 16, 2023
- Q Whenever each element of the circuit is multiplied by a factor say k then the equivalent resistance is also multiplied by the same factor
- Q 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 0...
- Q ob 3 7 battery of 10 volt is connected to a resistance of 20 ohm through a variable resistance R The amount o charge which has passed in the circuit...
- Q In the given network if an ideal battery is connected between points A and B a current i 5 6A flows through the battery If the same battery is connected...
- Q When 10 4 electrons are removed from a neutral metal sphere the charge on the sphere becomes a 16 C b 16 C c 32 C d 32 C ith...
- Q If two bulbs of power 60 W and 100 W respectively each rated 110 V are connected in series with the suppl of 220 V then 1 60 W bulb...
- Q a 1 5 A c 1 0 A 37 In the circuit shown below each resistance is R The current I is 15 7R a b c d b 1...
- Q An ammeter with a scale ranging from 0 to 15 mA has a resistance of 5 2 How should the instrument be connected together with a resistor and with what...
- Q A particle with charge q and mass mis projected with velocity v in opposite direction of a uniform electric field E as shown in figure in a gravity free space...
- Q A current i in a coil varies with time t according to the graph shown in figure Which of the following graph shows the induced emf in the coil with...
- Q Which of the following charge is not possible a 1 6 10 8 C b 1 6 10 9 C 1 6 10 2 C d None of these
- Q Equivalent resistance between A and B IS each connecting arm has resistance r A 7r 1 15 3r 3 B 2 4 8r 15 16r
- Q In the given circuit determine current through branch having indicated resistor R Given R R 422 R R R 22 E 5 V 10 V Conducting wire www R R...
- Q 1 5 0 192 19 W ww 2 30 3V A B 252 202 3 4V Find potential difference between point A B 1 3 5 V 2 3V 3...
- Q 18 Current Electricity 7 In the circuit shown in figure find potential difference across resistor R Tho 200 www Ato 26 bolos 16 totale 0 5 A 3 V T...
- Q 50 A cell can be balanced against 110 cm and 100cm of potentiometer wire respectively with and without being short circuited through a resistance of 100 Its internal resistance is...
- Q 3 75 x 1019 8 An electric iron draws a current of 1 A when voltage is 100 V Calculate the amount of charge flowing through it in two hours...
- Q 18 In the circuit all bulbs consume same power If resistance of bulb 1 is 36 Q then resistance of bulb 3 and 4 are 95 B 1 4 Q...
- Q 31 The value of current through 2 2 r sistor is 10 V 1 1 0 A 3 5 0 A 20 V 292 www 12 www 42 wwwww 2...
- Q Thus the resistivity of copper is 1 7 x 10 8 ohm metre Sample Problem 2 A copper wire has a diameter of 0 5 mm and resistivity of 1...
- Q In the circuit the cells E and E have emfs 4V and 8V and internal resistance 0 5 and 192 respectively P D across E and E will be 4V...
- Q The preparation of LiOH by the electrolysis of a 35 solution of LiCl using a platinum anode led to a current efficiency of 80 What weight of LiOH was formed...
- Q Find equivalent resistance between points A and B Values of resistances in ohms are as shown A 292 B C D 452 30 None of these A 6 3 ww...
- Q E are Two cells of emf E and E E connected individually to a potentiometer and their corresponding balancing length are 625 cm and 500 cm then the ratio 1...
- Q 3 A 6 V battery is connected to the terminals of a 3 m long wire of uniform thickness and resistance of 100 Q along with another 100 22 resistor...
- Q A lightning strike transfers 10 C of charge to the ground in 2 ms Calculate the current during this lightning strike
- Q A carbon resistor of 47 4 7 k is to be marked with rings of different colours for its identification NEET 2018 The colour code sequence will be 1 Violet...
- Q 5 A simple potentiometer circuit is shown in the figure The internal resistance of the 4 V battery is negligible AB is a uniform wire of length 100 cm and...
- Q Two cylindrical conductors A and B of the same diameter length L and 2L and different materials of resistivity p and 5 p are connected in series with a battery...
- Q The current density across a cylindrical conduct radius R varies in magnitude according to the equation wherer is the distance from the central J J 1 5 R axis Thus...
- Q Example 23 29 A galvanometer gives full scale deflection with 0 006 A current By connecting it to a 4990 2 resistance it can be converted into a 2n 2...
- Q 30V 192 til ww 10V ww 19 20 Find current through 20 resistor 1 2A 2 3A 3 3 5A 4
- Q Ifr 122 and E 10V in the network shown in figure Find the current i and current Problem 419 in the branch PQ of the circuit P r TH r...
- Q the resistance R in the circuit shown in Figure www random and has a triangular distribution as shown in fr r R 3 V 0 1 r ohms 90 110...
- Q in a unbias p n junction 1 high potential is at n side and low potential is at p side 2 high potential is at p side and low potential...
- Q The resultant resistance value of n resistances each of r ohms and connected in series is X When those n resistances are connected in 12parallel the resultant value is 28...
- Q A house is fitted with certain numbers of 100 W 230 V incandescent lamps The power to the house is fed by a generator producing the power at 240 V...
- Q Find the potential of J with respect of G 1 40 V 2 60 V 3 20 V 4 30 V 60 V 64 Q 32 02 G
- Q Two wires of the same material having lengths in the ratio of 1 2 and diameters in the ratio 2 1 are connected in series with a cell of emf...
- Q 16 Three resistors are connected as shown in the diagra A 1 amp 522 B ww 1022 wwww wwwww 1592 1 Through the resistor 5 ohm a current of 1...
- Q Three 60 W 120V light bulbs are across a 120 V power source If resistance of each bulb does not change with current then find out total power delivered to...
- Q In the circuit shown below 63 V 59 wwwwwwwww www 42 42 wwwwwwww 3Q 322 22 1 5 2 resistor is 1A 2 52 resistor is 2A 3 22 resistor...
- Q 12 On resistors print 6E7 or 6R7 or 6K7 respectively mean that value of resistances are 1 6 7 2 6 70 6 7k 2 6 7 92 679 6...
- Q In the given circuit in figure all batteries have emf and internal resistance negligible All resistors are in ohm Calculate the current in the rightmost 2 2 resistor 10 V...
- Q An inductor 20 mH a capacitor 100 uF and a resistor 50 Q are connected in series across a source of emf V 10 sin314t The power loss in the...
- Q 3 A B B C 4 A B B C SV R 20 BI E 2KQ IKO Find the value of resistance R when VCE 2V VBE 0 7V B...
- Q In the arrangment of resistances shown below the effective resistance between points A and B is 50 M 100 www www 100 100 200 W www 1002 B
- Q For a cell of emf 2 V a balance point is obtained for 50 cm of the potentiometer wire If the cell is shunted in parallel by a 2 2...
- Q 27 The current in the circuit shown is 292 2V www a 1 33 A c 2 00 A 2V 292 Fww A 201 WB JEE 2 Doubt b Zero...
- Q 1 An infinitely long straight wire with current I flowing along the positive z axis is located at coordinate P 12 m 5 m Determine the unit vector showing the...
- Q Equivalent resistance between A and B in the circuit shown is 1 3 8R 15 R 4 A www R www R R www www R ww www R 2...
- Q 15 An emf of 15 V is applied in a circuit coil containing resistance The ratio of the 5 H inductance and 10 currents at time t o and t...
- Q 6 In the given network find the 12 V a 4Q www 12 8 V 492 292 a potential difference between a and b b currents in each branch
- Q 3 9 Determine the current in each branch of the network shown in Fig 3 30 10 02 50 50 50 1002 HH 1002 FIGURE 3 30 10V
- Q In the circuit shown current in different branches are marked Select the correct alternative s 3VT XX 1 1 A in 120 i 1 1 1 692 2922 ww 14...
- Q Find the equivalent resistance between points A and B if each resistor is of resistance r A 1 4r 3 3 ww B www w www 2 ww 2r 3...
- Q Object having charge of 4 C is given 9 10 electrons Calculate the net charge on the object Two spherical balls of the same radius carry charges 0 4 C...
- Q 5 An object with a net po Calculate the number of electrons present on it A spherical ball is given one million electrons per second Calculate the time required by...
- Q The potential difference between the points A and B in the following circuit shown in the figure 50 1 volt 8 volt 502 552 Awwww 2V 12 5 0 www...
- Q A resistance R 12 2 is connected across a source of emf as shown in the figure Its em changes with time as shown in the graph If the heat...
- Q 20 A potential difference of 2 5 V is applied across the faces of a germanium crystal plate The face area of the crystal is 1 cm2 and its thickness...
- Q In given network potential drop across A and B is 1 Zero 49 8 V Bo wwwwwww 42 42 8V 2 8 V
- Q Find the minimum number of cells required to produce a current of 1 5 A through a resistance of 30 2 Given that the emf of each cell is 1...
- Q ample 40 a lution b a A W Find the equivalent resistance between A and B of the network extending off to the infinity shown in the figure R R...
- Q 30 Reading of an ideal voltmeter in the circuit belo 1 V 1 V 1 V 1 Zero 3 4 V HHH 1Q 19 wwwwwwww V 19 www 6 V...
- Q cells are connected as shown A IV 2V 20 C and resistance 702 Part AC is 20cm long Two resistors and two idea 1 50 B Of the points A...
- Q 5 A circuit containing five resistors is connected to a battery with a 12 V emf as shown in figure The potential difference across 49 resistor is 1 3 V...
- Q 22 In the following circuit the magnitude of potential 2 difference between A and B is R 2 A 151 15 V A 1 10 V 2 5 V 3...
- Q If in a p n junction diode a square input signal of 10 V is applied as shown Then the output signal across R will be AIEEE 2007 11 5...
- Q A capacitor of capacitance 50 F charged to 1000 V is connected to resistor of resistance 40 k as shown A voltmeter of resistance 40 kQ is connected across the...
- Q Two conducting wires of same length are made from the same material One wire is solid with diameter 1 mm while the other is hollow with outer diameter 2 mm...
- Q Find the i effective emf across AB ii current assuming R 102 6 V r 1 5 4 V and 12 2 A www 81 II E r1 W B...
- Q 11 Consider the following circuit 10V A 252 252 10V f 5V C 192 252 2 52 5V B 10V A Current between C and D is 2 5 A...
- Q 114 The potential difference across 802 resistance is 48 V as shown in the figure The value of potential difference across X and Y point will be a 168 V...
- Q m 4 A hollow spherical ball of inner radius a and outer radius 2a is made of a uniform material of constant thermal conductivity K The temperature within the ball...
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