Question

Two electrical motors, one with a power output of 250 watts and one with a power output of 500 watts are both connected to a standard home outlet. Which motor draws greater current?

Answer 1

The 500 watts motor

Step-by-step explanation:

Power is the workdone per unit time, it can be expressed as;

P = VI

P = I^2 × R

Where;

P = power

V = potential difference

I = current

R = resistance

Making current the subject of formula;

I = P/V

I^2 = P/R

Since they are both connected to the same standard home outlet. The potential difference across them is thesame( V is constant). Therefore the higher the power the higher the current.

I ∝ P

So the electrical motors with higher power 500 watts draws greater current.