A heater coil is cut into two equal parts and only one part is now used in the heater. The heat generated will now be

Options

A. One fourth
B. Halved
C. Doubled
D. Four times

Answer

C

Explanation

(c ) `H = (V^(2) t)/(R ) implies (H_(Half))/(H_(F u l l)) = ((R_(F u l l))/(R_(Half))) = (R )/(R // 2) = 2`
`implies H_(Half) = 2 xx H_(Full)`.