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The resistance of 10 metre long potentio...

The resistance of 10 metre long potentiometer wire is 1 ohm/meter . A cell of e.m.f. 2.2 volts and a high resistance box are connected in series to this wire. The value of resistance taken from resistance box for getting potential gradient of 2.2 millivolt/metre will be

A

`790 Omega`

B

`810 Omega`

C

`990 Omega`

D

`1000 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
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ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
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  2. Figure 6.51 shows a simple a potentiometer circuit for measuring a sma...

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  4. If the balance point is obtained at the 35th cm in a metre bridge the ...

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  5. The equivalent resistance across the terminals of source of e.m.f. 24 ...

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  8. A carbon resistor has colour strips as violet, yellow brown and golden...

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  9. A voltmeter of resistance 1000 Omega is connected across a resistance ...

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  10. A beam contains 2 xx 10^(8) doubly charged positive ions per cubic cen...

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  11. In the circuit shown, the reading of ammeter when switch S is open ...

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  12. In the circuit as shown in figure the

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  13. In figure shows a rectangular block with dimensions x , 2 x and 4 x ....

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  14. A battery is connected to a uniform resistance wire AB and B is eart...

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  15. A cylindrical metal wire of length l and cross sections area S , has...

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  16. A potential divider is used to give outputs of 4 V and 8 V from a 12 V...

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  17. Find equivalent resistance between A and B

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  18. Following figures show four situations in which positive and negative ...

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  19. A and B are two square plates of same metal and same thickness but len...

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  20. A moving coil galvanometer is converted into an ammeter reads upto 0.0...

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  21. Two conductors are made of the same material and have the same length....

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