Charge decay formula is:
Expression of voltage across the capacitor is:
This is because the time constant τ is given as, τ = RC
The switch in the figure has been in position a for a long time. It is changed to position b at t = 0 s.
A. What is the charge Q on the capacitor at t = 50 µs?
B. What is the current I through the resistor at t = 50 µs?
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