Current Electricity Charging Discharging Of Capacitors Question 97
Question: If a wire of resistance $ 20,\Omega $ is covered with ice and a voltage of 210 V is applied across the wire, then the rate of melting of ice is
[AFMC 1997]
Options:
A) $ 0.85,g/s $
B) $ 1.92,g/s $
C) $ 6.56,g/s $
D) All of these
Show Answer
Answer:
Correct Answer: C
Solution:
$ H=\frac{V^{2}}{R}\times t=\frac{{{(210)}^{2}}}{20}\times 1=mL $ \ $ \frac{{{(210)}^{2}}}{20}=m\times 80\times 4.2 $
Therefore $ m=6.56g/s, $
BETA
