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A coil of resistance 2Omega is immersed ...

A coil of resistance `2Omega` is immersed in 1 kg of water and is connected to the terminals of the battery of internal resistance `4Omega` and emf 6 volt for 3 minutes. The increase in temperature of water is

A

`0.93^@C`

B

`0.085^@C`

C

`1.92^@C`

D

`4.31^@C`

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A network of resistances is connected to a 16V battery with internal resistance of 1 Omega as shown in Fig. Compute the equivalent resistance of the network

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Three resistances of 4 Omega , 5Omega and 12 Omega are connected in parallel.A battery of emf 10 v and internal resistance 0.5 Omega . Is connected with that combination .Find out the currents through this battery and through each of this three resistances.

Two cells one of emf 1.4 V and internal resistance 0.6 Omega the other of emf 2.5. V and internal resistance 0.3 Omega are connected in parallel and the combination is connected in series with an external resistance of 4 Omega . What is the current through this resistance?

A 100V battery has an internal resistance 3 Omega . What is the reading of a voltmeter having resistance 200 Omega , when placed across the terminals of the battery? What should be the minimum value of the voltmeter resistance so that the error in finding the emf of the battery may not be more than 1%?

ABCD is a Wheatstone bridge in which the resistanvely 2Omega , 4 Omega , 6Omega and 8Omega . The points A and C are connected to the termicals of a cell of emf 2 v and negligible internal resistance . The points B and D are connected to a galvanometer of resistance 50Omega . Using Kirchhoff's laws find the current flowing through the galvanometer .

With two resistances 2 Omega and 3 Omega In parallel a third resistance of 4 Omega is connected in series.Find their equivalent resistance.

A heating coil of resistance 5Omega is connected to a cell . The internal resistance of the cell is 20Omega Calculate the value of the shunt to be introduced , so that , the energy consumed in the heating coil will be (1)/(19) th of the previous value .

When a resistance of 12 Omega is conencted with a cell of emf 1.5 V,0.1 A current flows through the resistance internal resistance of the cell is

PATHFINDER-CURRENT ELECTRICITY - I AND II-QUESTION BANK
  1. Current flowing in the following circuit will be

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  2. The steady state current in a 2Omega resistor shown in fig will be - (...

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  3. A coil of resistance 2Omega is immersed in 1 kg of water and is connec...

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  4. An electric bulb is marked 100W,230V. If the supply voltage drops to 1...

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  5. Two heaters are marked 200 V, 300 W. 300 V, 600 W. If the heaters are ...

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  6. A potentiometer wire of length 100 cm has a resistance of 10Omega. It ...

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  7. The e.m.f of a thermocouple one junction of which is kept at 0^@C, is ...

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  8. In producing chlorine through electrolysis 100 KW power at 125 volts i...

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  9. In the Bohr model of hydrogen atom, the electron is pictured to rotate...

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  10. Copper has one conduction electron per atom. Its density is 8.89g//cm^...

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  11. When no current Is passed through a conductor A.The free electrons d...

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  12. The current through a wire depends .on time as i=i0+alphat Where i0=...

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  13. If a wire is stretched to make it 0.1% longer, its resistance will

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  14. A wire ts bent in the form of circle of radius 2m. Resistance per unit...

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  15. In the circuit shown the current through 2 Omega resistance is

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  16. A current of 2 A flows through a 2 Omega resistor when connected acros...

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  17. An electric bulb rated for 500W at 100 V is used in a circuit having a...

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  18. 100W bulb B1 and two 60 W bulbs B2 and B3 are connected to a 250 V sou...

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  19. In the circuit shown in figure the heat produced in the 5Omega resisto...

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  20. The equivalent resistance of the network shown in figure between the p...

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