Question

The potential gradient along the length of a uniform wire is 10 volt / metre. and $C$ are the two points at 30 cm and point on a meter scale fitted along the wire. The potential difference between and $C$ will b

• A. 3 volt
• B. 0.4 volt
• C. 7 volt
• D. 4 volt

Answer 1

Answer: (A)

3 volt

Answer 2

Potential gradient = Change in voltage per unit length

∴