Question

A conductor carries a current of 0.4 A. Find the amount of charge that will pass through
the cross-section of the conductor in 1.5 minute. How many electrons will flow in this
time interval. Given charge on an electron = 1.6 x 10-19 C.​

Answer 1

Answer:

Explanation:

Current = Charge / time taken for charge to flow

⇒  I = Q / t

⇒ 0.4 =  Q / 1.5 * 60

⇒ 0.4 = Q / 90

∴  Q = 90 * 0.4 = 36 C(coulomb)

Now ,

Q = no. of electrons * charge of an electron

no. of electrons = Q / charge of electron

                          = 36 / 1.6 * 10⁻¹⁹

                          = 2.25 * 10²⁰

That's it . Hope it helps !!