Question

How much charge will pass through a point in a wire in 30 seconds if the electric current of 2A is flowing through it?
1. 30 C
2. 120 C
3. 15 C
4.  60 C

Answer 1

Correct Answer - Option 4 :  60 C

CONCEPT:

• Electric charge: A physical property of matter due to which the body experiences a force when it is placed in the electromagnetic field is known as an Electric charge.
• There are two types of electric charge

1. positive
2. negative

• Electric current (i): The rate of charge flow is called electric current.

When the electric current (i) is flowing in a circuit in time t, the electric charge flow through any point is given by:

q = it

where q is the charge on a body, i is the current in the circuit, and t is the time.

​CALCULATION:

given that i = 2A and t = 30sec

​q = it

q = 30 × 2 = 60 C

So the correct answer will option 4.