An electric fan and a heater are marked as 100 W , 220 V and 1000 W , 220 V respectively. The resistance of heater is

Question

An electric fan and a heater are marked as 100 W , 220 V and 1000 W , 220 V respectively. The resistance of heater is (A) equal to that of fan (B) lesser than that of fan (C) greater than that of fan (D) zero

Tardigrade Admin · Accepted Answer

As R propto V2 / P or R propto 1 / P, so resistance of heater is less than that of fan.

Q. An electric fan and a heater are marked as $100 W, 220 V$ and $1000 W, 220 V$ respectively. The resistance of heater is

equal to that of fan

lesser than that of fan

greater than that of fan

zero

As $R \propto V^{2} / P$ or $R \propto 1/ P$ , so resistance of heater is less than that of fan.

Q. An electric fan and a heater are marked as 100W,220V and 1000W,220V respectively. The resistance of heater is