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31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 1

In a metre-bridge, the balancing length from theleft end when standard resistance of 1 Ω is inright gap is found to be 20 cm. The value ofunknown resistance is [1999]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 1

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 2

Two electric bulbs, one of 200 V, 40W and otherof 200 V, 100W are connected in a domesticcircuit. Then [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 2

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 3

In electrolysis, the amount of mass deposited orliberated at an electrode is directly proportionalto [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 3

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 4

Potentiometer measures potential moreaccurately because [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 4

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 5

Five resistances have been connected as shown in the figure. The effective resistance between A and B is

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 5

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 6

A car battery has e.m.f. 12 volt and internalresistance 5 × 10^{–2} ohm. If it draws 60 amp current,the terminal voltage of the battery will be [2000]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 6

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 7

Si and Cu are cooled to a temperature of 300 K,then resistivity? [2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 7

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 8

If 25W, 220 V and 100 W, 220 V bulbs areconnected in series across a 440 V line, then [2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 8

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 9

A battery of 10 V and internal resistance 0.5Ω isconnected across a variable resistance R. Thevalue of R for which the power delivered ismaximum is equal to [1992, 2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 9

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 10

A wire has a resistance of 3.1Ω at 30ºC and aresistance 4.5Ω at 100ºC. The temperaturecoefficient of resistance of the wire [2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 10

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 11

If specific resistance of a potentiometer wire is10^{–7} Ωm, the current flow through it is 0.1 A andthe cross-sectional area of wire is 10–6 m2 thenpotential gradient will be [2001]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 11

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 12

The resistivity (specific resistance) of a copperwire [2002]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 12

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 13

The potential difference between the terminals of a cell in an open circuit is 2.2 V. When a resistor of 5Ω is connected across the terminals of the cell, the potential difference between the terminals of the cell is found to be 1.8 V. The internal resistance of the cell is [2002]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 13

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 14

An electric kettle has two heating coils. Whenone of the coils is connected to an a.c. source,the water in the kettle boils in 10 minutes. Whenthe other coil is used, the water boils in 40minutes. If both the coils are connected inparallel, the time taken by the same quantity ofwater to boil will be [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 14

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 15

Two 220 volt, 100 watt bulbs are connected firstin series and then in parallel. Each time thecombination is connected to a 220 volt a.c.supply line. The power drawn by thecombination in each case respectively will be [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 15

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 16

Fuse wire is a wire of [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 16

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 17

In a Wheatstone’s bridge all the four arms have equal resistance R. If the resistance of the galvanometer arm is also R, the equivalent resistance of the combination as seen by the battery is [2003]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 17

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 18

A battery is charged at a potential of 15V for 8hours when the current flowing is 10A. Thebattery on discharge supplies a current of 5Afor 15 hours. The mean terminal voltage duringdischarge is 14V. The “watt-hour” efficiency ofthe battery is [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 18

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 19

When three identical bulbs of 60 watt, 200 voltrating are connected in series to a 200 voltsupply, the power drawn by them will be [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 19

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 20

In India electricity is supplied for domestic useat 220 V. It is supplied at 110 V in USA. If theresistance of a 60 W bulb for use in India is R,the resistance of a 60 W bulb for use in USA will be [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 20

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 21

The electric resistance of a certain wire of iron isR. If its length and radius are both doubled, then

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 21

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 22

Resistances n, each of r ohm, when connectedin parallel give an equivalent resistance of Rohm. If these resistances were connected inseries, the combination would have a resistancein ohms, equal to [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 22

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 23

Five equal resistances each of resistance R are connected as shown in the figure. A battery of V volts is connected between A and B. The current flowing in AFCEB will be [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 23

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 24

A 6 volt battery is connected to the terminals ofthe three metre long wire of uniform thicknessand resistance of 100 ohm. The difference ofpotential between two points on the wireseparated by a distance of 50 cm will be [2004]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 24

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 25

A 5–ampere fuse wire can withstand amaximum power of 1 watt in the circuit. Theresistance of the fuse wire is [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 25

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 26

When a wire of uniform cross–section a, length l and resistance R is bent into a complete circle, resistance between any two

of diametrically opposite points will be [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 26

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 27

For the network shown in the Fig. the value of the current i is [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 27

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 28

Two batteries, one of emf 18 volt and internal resistance 2Ω and the other of emf 12 volt andinternal resistance 1Ω, are connected asshown. The voltmeter V will record a readingof [2005]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 28

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 29

In producing chlorine through electrolysis, 100watt power at 125 V is being consumed. Howmuch chlorine per minute is liberated? E.C.E. ofchlorine is 0.367 × 10^{–6} kg/ coulomb. [2006]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 29

31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 30

Power dissipated across the 8Ω resistor in the circuit shown here is 2 watt. The power dissipated in watt units across the 3Ω resistor is

[2006]

Detailed Solution for 31 Years NEET Previous Year Questions: Current Electricity - 2 - Question 30

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