Question

Find the total charge flowing in each example:

400A flows through a power line in 2 mins

Answer in coulombs

Answer 1

Given:-

• Current ,I = 400 A

• Time taken ,t = 2min = 2×60 = 120 s

To Find:-

• Total Charge Flow ,Q

Solution:-

As we know that current is defined as the flow of charge per unit time.

• I = Q/t

where,

I is the current

Q is the Charge

t is the time taken

Substitute the value we get

➨ 400 = Q/120

➨ 400 × 120 = Q

➨ Q = 48000 C

Therefore, the total charge flow 48000 Coulombs.

Additional Information !!

• The flow of charge is called current.

• The charge passing per unit time through a given place is the magnitude of electric current at that place.

• SI unit of current is Ampere (A).

• If one coulomb of charge passing through a place in one second, then the current is said to be one ampere.

Answer 2

=> q = I × t

=> q = 400 × 2 × 60

=> q = 800 ×60

=> q = 48000 Coulombs

Charge = 48000 Coulombs