Question

If 40 C of charge flow past a point in 20 s, What is the current ?
1. 2 A
2. 0.5 A
3. 20 A
4. 40 A

Answer 1

Correct Answer - Option 1 : 2 A

Concept:

Electric Current: It is defined as the net amount of electric charge (q) flows through a cross-section of a conductor in an electric circuit in a per unit time (t).

The SI unit of electric current is Ampere(A).

Electric current (I) = Electric charge (q)/Time (t)

\(I=\frac{Q}{t}\)

Calculation:

Given that:

Charge(q) = 40 Coulomb.

Time(t) = 20 seconds.

By using the formula:

\(I=\frac{40}{20}\)

I = 2 Ampere.