Question

An electric dyer consumes 7.2 x106 joules of electrical energy when operating at 220 Volts from and AC voltage source for 45 minutes. Determine the current that the dyer draws during operation

Answer 1

Answer:1.21A

Explanation: E= Ivt

I=?

V=220volts

E=7.2*10^6

t=45mins

Convert t from mins to secs.

T=45*60=2700secs

E=Ivt

I= E/vt

I=720000/220*2700

I= 720000/594000

I=1.21A