Question

An electric heater is rated as 1200W -220V. Calculate the current flowing through it and resistance of heating element

Answer 1

P= 1200 W

v= 220 V

i)

P=VI               (formula of power)

therefore, I= P/V

I= 1200/220

I= 5.46 A approx

ii)

V=IR                (Ohms law)

therefore R= V/I

R= 220/5.46

R= 40.33Ω approx

Answer 2

u can solve further yourself in Decimal...