A 10 m long wire of resistance 20Ω is connected in series with a battery of emf 3V and a resistance of 10 Ω. The potential gradient along the wire in volt per meter is
A. 6.02
B. 0.1
C. 0.2
D. 1.2
Answer:C
A 10 m long wire of resistance 20Ω is connected in series with a battery of emf 3V and a resistance of 10 Ω. The potential gradient along the wire in volt per meter is
A. 6.02 B. 0.1 C. 0.2 D. 1.2