What is the capacity of a capacitor if, when charged to a voltage of 1.8 kV, it has an energy of 0.8 μJ.

univerkov | November 29, 2020 | education

Let’s use the formula:
W = CU ^ 2/2
Expressing C:
C = 2W / U ^ 2
We substitute the values, while not forgetting about the conversion of μJ to J and kV to V:
C = 1.6 × 10 ^ -6 / (1.8 × 10 ^ 3) ^ 2 = 0.49 × 10 ^ -12

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