Current Electricity Charging Discharging Of Capacitors Question 120
Question: A coil of wire of resistance $ 50,\Omega $ is embedded in a block of ice. If a potential difference of 210 V is applied across the coil, the amount of ice melted per second will be
Options:
A) 4.12 gm
B) 4.12 kg
C) 3.68 kg
D) 2.625 gm
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{Q}{t}=\frac{V^{2}}{4.2R}=\frac{m}{t}.L $ \ $ \frac{m}{t}=\frac{V^{2}}{4.2RL}=\frac{{{(210)}^{2}}}{4.2\times 50\times 80}\approx 2.625gm $
BETA
