Question Detail

PHY 102 Current Electricity Objective Question

Question

According to page 20, how does the time constant (τ) of an RC circuit change if the resistance (R) or capacitance (C) is increased?
Options
A τ increases with R, but decreases with C.
B τ decreases with R, but increases with C.
C τ increases with both R and C.
Correct Answer
D τ decreases with both R and C.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 20 explicitly states, 'τ increases with R' and 'τ increases with C'. This is consistent with the formula τ = RC, where increasing either R or C will lead to a larger time constant.

Hint

Consider the mathematical relationship τ = RC. What happens when you multiply larger numbers?

Question Info