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The potential gradient long the length o...

The potential gradient long the length of a unifrom wire is `10 "volt"//meter`. `B` and `C` are the two points at `30 cm` and `60 cm` point on a meter scale fitted along the wire. The potential diffenence between `B` and `C` will be

A

3 V

B

0.4 V

C

7 V

D

4 V

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The correct Answer is:
B,D
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