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This question belongs to Electrical Engineering Energy And Power

Energy and Power

?

A 220 Ω resistor dissipates 3 W. The voltage is

A) 73.3 V B) 2.5 V C) 25.7 V D) 257 V

Answer & Solution

Correct Answer: Option C

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Question posted by Examveda

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4 Comments

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Sandip Rathod 5 years ago

P=v^2/R

Uddhav Bulbule 5 years ago

P=VI
Since, I=V/R
Therefore, P=V*V/R=V^2/R
Putting P=3 W & R=220 ohm
3=V^2/220
V^2=3*220=660
V=25.67=25.70 V

Nikolai Mactavish 6 years ago

P=(V^2)/R
(V^2)=P*R
(V^2)=3*220=660
V=25.69=25.7

Nikolai Mactavish 6 years ago

P=(V^2)/R
3=(V^2)/220
(V^2)=660
V=25.69=25.7

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A 220 resistor dissipates 3 W The voltage is

A 220 Ω resistor dissipates 3 W. The voltage is

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