Question

If a Current of 0.5 ampere flows through a metallic wire of 2 hours then how many electrons would flow through the wire ?

Answer 1

Answer:Current, I = 0.5 A

Time, t = 2 hours

Convert in sec we get

Time, t = 2 × 60 × 60 s

= 7200 s

Use formula

Charge Q = It

Plug the values we get

= 0.5 A × 7200 s

= 3600 Coulombs

Number of electrons = total charge / charge on 1 electrons

= 3600/(1.6 ×1019)

=2.25 × 10M22 electrons.

Answer 2

See the above answer........