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The accurate measurement of emf can be o...

The accurate measurement of emf can be obtained using.

A

Wheatstone bridge

B

ammeter

C

a potentiometer

D

voltmeter

Text Solution

Verified by Experts

The correct Answer is:
c
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Assertion : Electric field outside the conducting wire accurate measurement. Reason : The potential gradient for a potentiometer of accurate measurement. Reason : Net charge on conducting wire is zero.

PRADEEP-CURRENT ELECTRICITY-Exercise
  1. Metal wire is connected in the left gap, semi conductor is connected i...

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  2. In the measurement of resistance by a meter-bridge, the current is nec...

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  3. The accurate measurement of emf can be obtained using.

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  4. Which of the following statement is only currect statement for a poten...

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  5. Kirchhoff's first rule is based on ………

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  6. Kirchhoff's second law is based on law of conservation of

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  7. A meter-bridge is based on the principle of

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  8. A meter bridge cannot be used to measure …… resistances

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  9. The fall of potential per unit length of wire is called……..

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  10. A balance point is obtained in the potentiometer wire .If the fall of ...

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  11. Explain, why should the current be not passed through potentiometer wi...

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  12. Can you interchange the positions of the battery in the auxiliary circ...

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  13. Potentiometer in so named becomes it measures……..

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  14. The expression for potential gradent of potentiometer wire in terms of...

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  15. Read the following statements carefully : (i) produced of a volt and a...

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  16. A constant voltage is applied between the two ends of a uniform metall...

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  17. How much electrical energy in kilowatt hour is connected to operating ...

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  18. Two electric bulbs of 40 watt each are connected in series. The power ...

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  19. How many calories of heat will be approximately developed in a 210 W e...

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  20. Two conducting wires of the same material and of equal length and equa...

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