When a potential difference is put across a wire, ___.

a. electron speeds decrease

b. electrons drift slowly toward the positive end of the wire

c. conduction of electricity ceases

d. electron energy lessens

Question

Physics

Karlee Kramer

30 September, 08:26

When a potential difference is put across a wire, ___.

a. electron speeds decrease

b. electrons drift slowly toward the positive end of the wire

c. conduction of electricity ceases

d. electron energy lessens

+2

Answers (2)

Know the Answer?

Carina Pena · Answer 1

option (b)

Explanation:

As the potential difference is applied accros a wire, the electron drifts slowly towards the positive end of the wire as the electrons are negatively charged so they attract towards the positive end.

Aditya Davies · Answer 2

b. electrons drift slowly toward the positive end of the wire

Explanation:

Motion of electrons constitutes current. According to Ohm's law, the current in the wire is directly proportional to the potential difference across the two ends of the wire.

I ∝ V

⇒V = I R

When potential difference is put, the electrons towards the positive end. Thus, option b is correct.

When a potential difference is put across a wire, ___.a. electron speeds decreaseb. electrons drift slowly toward the positive end of the wirec. conduction of electricity ceasesd. electron energy lessens

When a potential difference is put across a wire, ___.

a. electron speeds decrease

b. electrons drift slowly toward the positive end of the wire

c. conduction of electricity ceases

d. electron energy lessens