Question

Electric power is inversely proportional to
(a) resistance (b) voltage
(c) current
(d) temperature

Answer 1

Answer:

a) resistance

Explanation:

As in pic

Answer 2

Electric power is inversely proportional to resistance.

To properly understand this answer, we have to know more about the mathematical expression of the electrical power.

We know that,

• P = I²R
• V = IR

Where,

• P = Electric power
• I = Current
• V = Voltage
• R = Resistance

Now, by using the above mentioned two mathematical relationships, we can say that :

P = (V/R)² × R

P = V²/R

From, the above mentioned mathematical equation, it is clear that P is inversely proportional to R. (i.e. electric power is inversely proportional to resistance)

Hence, electric power is inversely proportional to resistance.

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