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
Related Lesson: Summarizing Electric Potential Energy: Potential Difference | Electric Potential and Electric Field
The correct answer is D.
Explanation:
V =
√ (v1 + v2)2 + VR2
√ (v1 + v2)2 + VR2
V =
√ (40 + 110)2 + 802
V =
√ (-70)2 + 802
=
√ 4900 + 6400
=
√ 11300
= 106.3v
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V =
√ (v1 + v2)2 + VR2
V =
√ (40 + 110)2 + 802
V =
√ (-70)2 + 802
=
√ 4900 + 6400
=
√ 11300
= 106.3v