Question

The charge on a capacitor increases by 20 μC when the voltage across it increases from 84 V to 121 V. What is the capacitance of the capacitor?

Answer 1

Answer:

Capacitance of the capacitor = 0.547 F

Explanation:

We charge of capacitor,

            Q = CV

Let Q be the initial charge,we have voltage  = 84 V

             Q = C x 84 = 84 C

We have final charge = Q + 20.25  and voltage = 121 V

            Q + 20.25 = 121 C

Substituting Q value from previous equation

           84 C + 20.25 = 121 C

            37 C = 20.25

                 C = 0.547 F

Capacitance of the capacitor = 0.547 F