The impedance Z ohms of a circuit containing a resistance R ohms, inductance L henries and capacity C farads, when the frequency of the oscillation is n per second, is given by

(a) Make L the subject of this formula.

(b) If n = 50, R = 15 and C = 10^–4 show that there are two values of L which make Z = 20 but only one value of L which will make Z =100. Find the values of Z in each case to two decimal places.

Transcribed Image Text:

Z = 1 ( 4 + (2x1 - 2xMC)) C