Three identical capacitors A, B and C are charged to the same voltage and then discharge through Rₐ, Rᵦ and R꜀ with Rₐ>Rᵦ>R꜀. The plotted decay curves are 1,2,3. Which relations are correct?
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Question

Three identical capacitors A, B and C are charged to the same voltage and then discharge through Rₐ, Rᵦ and R꜀ with Rₐ>Rᵦ>R꜀. The plotted decay curves are 1,2,3. Which relations are correct?

Select all that apply

G1 Physics · Accepted Answer

For equal C, time constant τ=RC. Larger R gives slower decay. Therefore curve 3 (slowest) corresponds to A, curve 2 to B, and curve 1 (fastest) to C. Correct: B, C, D.