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Author: Mithoo Mal

Hyderabad,Bs Physics ,CSS,CCE preparation

A wire of uniform area of cross -section A length L and resistance R is cut into two parts. The resistivity of each part:

A. Become zero
B. Is halved
C. Is doubled
)D. remains same

Submitted by: Mithoo Mal

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A potential difference is applied across the ends of a wire. If the potential difference is doubled, then the drift velocity of free electron will.

A. be quadrupled
B. be doubled
C. be halved
D. remain unchanged

Submitted by: Mithoo Mal

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