Question

A parallel plate capacitor is made by stacking n equally spaced plates connected alternatively if the capacitance bw any two adjacent plates is C then the resultant capacitance is

Answer 1

The resultant capacitance of the capacitor is (n−1)C.

Explanation:

• Parallel Grouping

C(eq) = C(1) + C(2) ......

As n plates are joined, it means (n-1) capacitor joined in parallel.

Therefore.

• Resultant capacitance = (n−1)C

Thus the resultant capacitance of the capacitor is (n−1)C.

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A resistor of 200 ohm and a capacitor of 15 micro F are connected in series to a 220 V, 50 Hz a.c. source . Calculate the current in the circuit and the r.m.s. voltage across the resistor and capacitor.?

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