A potential difference of 20 V is applied across the ends of a coil. The amount of heat generated in it is 800 cal/s. The value of resistance of the coil will be
A. 12 Ω
B. 1.2 Ω
C. 0.12 Ω
D. 0.012 Ω
Answer:C
A potential difference of 20 V is applied across the ends of a coil. The amount of heat generated in it is 800 cal/s. The value of resistance of the coil will be
A. 12 Ω B. 1.2 Ω C. 0.12 Ω D. 0.012 Ω