Question

A heater coil is rated 100 w , 200 v it is cut into two identical parts both parts are connected together in parallel to the same source of 200 v

Answer 1

P = 100w

V = 200v

R= ?

P = V/R²

100 = 200/ R²

R² = 200/100

R² = 2

R = √2

R' = 1/√2

V = 200v

I = V/R

I= 200√2 A