Question

A current of 3 A flows around a circuit for 10 s. How much charge flows past a point in the circuit in this time?

Answer 1

Answer:

30 coulombs

Explanation:

Given :

• Current flowing through the circuit = I = 3 Amperes

• Time taken = t = 10 seconds

To find :

• Charge flowing in the circuit in the given circuit (q)

We know that : q = i×t

Substituting the values :

q = 3×10

q = 30 coulombs

The charge passing in the circuit is equal to 30 coulombs

Extra punch:

Si unit of current : Ampere

Si unit of resistance = ohms

Si unit of potential difference = volts

Ohms law : V=IR

Answer 2

Given :-

• Current flowing (I) =3A

• Time taken (t) =10s.

To Find:-

• Charge (Q) flow in the circuit.

Solution :-

By using this formula

➦ I =Q/t

➭ 3=Q/10

➭ Q=3×10

➭ Q=30 C

∴The charge flow in circuit is 30 coulomb.