Question

A current of 4 A flows around a circuit for 15 s. How much charge flows past a point in the circuit in this time?​

Answer 1

Given :-

★ Current, I = 4 A

★ Time, t = 15 sec

To Find :-

★ How much charge flows in the circuit

Solution :-

We know,

$\blue{\boxed{\boxed{\rm Q=I \times t}}}$

Where,

Q = Charge

I = Current

t = time

Substituting the values, we get

⟹ Q = 4 × 15 Coulomb

⟹ Q = 60 Coulomb

Hence,

Charge, Q = 60 Coulomb

Know more :-

✰ What is an electric current?

=> It's the rate of flow of electric charge.

S.I unit : Ampere (A)

✰ What is charge?

=> It's a basic property of electrons, protons and other subatomic particles.

In SI base units: C = A s

SI unit: Coulomb (C)

Answer 2

Given ,

• Current (I) = 4 amp
• Time (t) = 15 sec

We know that ,

The rate of unit charge is called current

It is denoted by " I "

$\boxed{ \sf{I = \frac{q}{t} }}$

The SI unit of current is amp

It is scalar quantity

Thus ,

4 = q/15

q = 60 coulomb

$\therefore \underline{\sf{The \: magnitude \: of \: charge \: is \: 60 \: coulomb} }$