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From the diagram above, if the potential difference across the resistor, capacit...


Question

From the diagram above, if the potential difference across the resistor, capacitor and inductor are 80 v, 110 v, 40 v respectively, the effective potential difference is

Options

A) 116.3 V

B) 50.0 V

C) 230.0 V

D) 106.3 V


The correct answer is D.

Explanation:

V =
√ (v1 + v2)2 + VR2 

V =
√ (40 + 110)2 + 802 

V =
√ (-70)2 + 802 

=
√ 4900 + 6400 

=
√ 11300 

= 106.3v


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