Question

An electric iron desiged for 110 v a.C. Supply was rated at 500 w. It was put across a 220 v supply. Assuming that at 110 v it supplied 500 w output, (i.E., no losses) at the new voltage it will supply

Answer 1

p = v.i (50 / 11 A) 500/110

Answer 2

Answer:

P=v²/r

500=110*110/R

R=24.2

P=220*220/24.2

P=2000W