Question

A charge of 90 C passes through a wire in 1hour15 min what is current in wire

Answer 1

Answer:

A charge of 90 C passes through a wire in 1hour15 min what is current in wire

A charge of 90 C passes through a wire in 1hour15 min what is current in wireanswer;

given = charge=Q=90 coulomb

=time taken=t=1hour 15 minutes

(let us consider t=75 minutes = 1hour 15 minutes)

formula =I=Q/T

(i.e current = charge / time taken)

I=90/75

= 1.2

therefore the current I = 1.2A

(A because SI unit of current = ampere)

Answer 2

Explanation:

Given that

Total charge (Q) = 90C

Time (t) = 1 hour + 15 minutes

= 60s x 60s + 15 x 60s

= 3600s + 900s

= 4500s

Current (I) = ?

solution :

I = Q/t

= 90/4500

= 0.02A

= 20 x 10-³ A

= 20mA.

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