Which one of the following is a correct formula equation? a. p = e2/r b. p = ir c. p = i2e d. p = e2i

A. P = E2/R

Based on the context of electricity the formula for power is given by

P = E2/R; where

P is power in Watts;  

I is current in Amps;  

R is resistance in Ohms; and  

E is voltage in Volts.  

The formula may also be given as P = V2/R

The correct answer is A.

Explanation:

P = E²/R shows that the power in a circuit is the square of applied voltage applied and inversely with the circuit resistance. This expression is extension of OHM'S law.

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