Apentix/AP Physics 2/Unit 4: Electric Circuits/Question

AP Physics 2easymcq1 pt

In an RC circuit, the time constant τ represents:

A.The time for the capacitor to fully charge

B.The time for the charge to reach 63% of its maximum value

C.The time for the current to double

D.The time for the voltage to reach zero

Explanation

Core Concept

The time constant τ = RC is the time it takes for the charge/voltage to reach approximately 63.2% (1 - 1/e) of its final value during charging.

Correct Answer

BThe time for the charge to reach 63% of its maximum value

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