Question Detail

PHY 102 Test Compilation PHY 102 23 Objective Question
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Question

The current is zero in a conductor when no potential difference is applied because:
Options
A the electrons are not moving
B the electrons are not moving fast enough
C for every electron with a given velocity there is another with equal magnitude and opposite direction
Correct Answer
D equal numbers of electrons and protons are moving together
Correct Answer

Option C is the correct answer.

Detailed Explanation

Free electrons move fast and randomly (thermal motion). With no applied p.d., these random velocities cancel out in pairs, so there is no net drift.

Hint

Free electrons move fast and randomly (thermal motion).

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 23
Type: Objective
Difficulty: Not specified
Question 1387 of 1819
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