Question

In: Physics

When a Capacitor in an RC circuit is charging, current through the resistor:  increases/ decreases/ stays the...

When a Capacitor in an RC circuit is charging, current through the resistor:  increases/ decreases/ stays the same

When a Capacitor in an RC circuit is discharging, current through the resistor:  increases/ decreases/ stays the same

When a Capacitor in an RC circuit is charging, charge on the plates:  increases/decreases/stays the same

When a Capacitor in an RC circuit is discharging, charge on the plates:  increases/decreases/stays the same

When a Capacitor in an RC circuit is charging, voltage on the plates:  increases/decreases/stays the same

When a Capacitor in an RC circuit is discharging, voltage on the plates:  increases/decreases/stays the same

Solutions

Expert Solution

When capacitor is charging then the equation of charging is given as,

Vt = Vo(1-e^-t/T)

Here also we can wirte this equation as,

I(t)= Io(e^-t/T)

Where

Io = V/R

Also for charge we have,

Q(t) = Qo(1-e^-t/T)

Where Qo = VC

T = Time constant

Vo = voltage of battery source

Now depending upon the above equation lets answer the following question.

A) When a Capacitor in an RC circuit is charging, current through the resistor:  increases/ decreases/ stays the same.

Answer:- decreases

B)When a Capacitor in an RC circuit is discharging, current through the resistor:  increases/ decreases/ stays the same

Answer: decreases

C) When a Capacitor in an RC circuit is charging, charge on the plates:  increases/decreases/stays the same

Answer:- increases

D) When a Capacitor in an RC circuit is discharging, charge on the plates:  increases/decreases/stays the same

Answer:- decreases

E) When a Capacitor in an RC circuit is charging, voltage on the plates:  increases/decreases/stays the same

Answer:- increases

F) When a Capacitor in an RC circuit is discharging, voltage on the plates:  increases/decreases/stays the same

Answer:- decreases.


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