write electric power in terms of (i) current and voltage (ii) current and resistance (iii) resistance and voltage
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Answer:
Ohm's law defines the relationship between the voltage, current, and resistance in an electric circuit: i = v/r. The current is directly proportional to the voltage and inversely proportional to the resistance.
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(i) P = V x I
(iii) P = V x I
V = I x R
So, P = I x R x I
P = I²R
(iii) P = V x I
V = I x R
I = V/R
So, P = V x V/R
P = V²/R
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