Question Detail

PHY 102 Current Electricity Objective Question
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Question

In a charging RC circuit, what happens to the current after one time constant (τ)?
Options
A It drops to 1/e (about 36%) of its initial value
Correct Answer
B It rises to 1/e (about 36%) of its initial value
C It drops to 64% of its initial value
D It rises to 64% of its initial value
Correct Answer

Option A is the correct answer.

Detailed Explanation

Page 21 states that in one time constant, the "Current drops to 1/e of initial value (about 36%)."

Hint

During charging, the current decreases exponentially from its maximum initial value.

Question Info

Course: PHY 102
Topic: Current Electricity
Type: Objective
Difficulty: Not specified
Question 680 of 1819
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