Current Electricity Charging Discharging Of Capacitors Question 402

Question: Calculate the amount of charge flowing in 2 minutes in a wire of resistance 10 W when a potential difference of 20 V is applied between its ends

[Kerala (Engg.) 2001]

Options:

A) 120 C

B) 240 C

C) 20 C

D) 4 C

Show Answer

Answer:

Correct Answer: B

Solution:

$ i=\frac{V}{R}=\frac{Q}{t}\Rightarrow Q=\frac{Vt}{R}=\frac{20\times 2\times 60}{10}=240,C $ .