In a series circuit

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

In a series

RLC

circuit, the measured rms voltages are

V_R = 50\,\text{V}

V_L = 120\,\text{V}

and

V_C = 70\,\text{V}

. The rms value of the supply voltage is (a)

100\,\text{V}

(b)

148\,\text{V}

(c)

71\,\text{V}

(d)

120\,\text{V}