If the length of the filament of a heater is reduced by
PHYSICS · Single correct · CBSE · Physics · Current Electricity · Current Electricity
Problem
If the length of the filament of a heater is reduced by 10%, the power of the heater will
(1) increase by about 9%
(2) increase by about 11%
(3) increase by about 19%
(4) decrease by about 10%