Question

A current of 2 A is passed through a coil of resistance $75\Omega$ for 2 minutes. How much charge is passed through the resistance ?

• A. 240 C
• B. 150 C
• C. 300 C
• D. 420 C

Answer 1

The correct option is A 240 C

A current of 1 ampere is said to flow when 1 coulomb of charge passes a given point in 1 sec.
Charge flowing through a conductor in one second is given as $charge=current\times time$.
In this case, a current of 2 amps flows through the conductor for 2 minutes, that is, $2\times 60=120seconds$.
Therefore, charge =$2\times 120=240Coloumbs$.
Hence, the charge flowing through the conductor is 240 C.