Question

Find the resistance of a 200w,250v incondescent lamp

Answer 1

Answer:Since the electric power equals the voltage square over resistance P=V²/R

Then,

V= 250 volts

P= 200 watts

To find R from the equation:

R=V²/P

R=250²/200=312.5ohm

Answer 2

Answer:

there is no lamp named incondescent