Consider a long conductor, the middle of which is earthed. If the potential difference across the two ends of the conductor is $ 220 \mathrm{V} $, then what is the potential at the ends and the middle point?

Q: Consider a long conductor, the middle of which is earthed. If the potential difference across the two ends of the conductor is $ 220 \mathrm{V} $, then what is the potential at the ends and the middle point?

$ 110 V $ and $ -110 V $ at ends and $ 0 V $ at the mid point. Since the middle is earthed, its potential is 0 V. The 220 V difference is shared equally by the two equal halves of the conductor, so each end is 110 V away from the midpoint, one positive and one negative.

Question

Accepted Answer

$ 110 V $ and $ -110 V $ at ends and $ 0 V $ at the mid point. Since the middle is earthed, its potential is 0 V. The 220 V difference is shared equally by the two equal halves of the conductor, so each end is 110 V away from the midpoint, one positive and one negative.

NEET Physics: Electric Potential questions with solutions

Questions