Question

An electric iron draws a current of 5.0A when connected to a 250Vrms supply. Calculate the energy consumed by the iron if it is used for 10minutes.

Answer 1

We have to use the equation :

E = ItV

I = Current(A) , t = time(s) , V = Voltage(V)

E = 5 × 250 × (10×60)

= 750000 J

Since time is supposed to be in seconds, therefore it is converted from mins to secs.

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