9702 · topic questions
Discharging a capacitor
8 past-paper questions on Discharging a capacitor
Use Fig. 7.2, Fig. 7.3 and your answer in (a) to explain why the variation of Q with t is exponential in nature.
the time constant τ of the circuit in Fig. 6.1.
On Fig. 7.3, sketch the variation with t of the power P dissipated in R.
Determine the resistance of R.
On Fig. 8.1, sketch the variation of I with t between t = 0 and t = 100 ms.
Explain the shape of the line in Fig. 6.2.
State three conclusions that may be drawn from Fig. 2.1. The conclusions may be qualitative or quantitative.
the time constant τ of the circuit.
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