Question

A current of 5.0 A flows through a circuit for 16min 40sec. Calculate the number of

electron that flows through the circuit during this time.​

Answer 1

Solution:- given current I = 5.0A

Time 'T' = 16 min 40sec = 1000sec

∵ charge 'Q ' = It = 5× 1000 = 5000C

we also know that , 'charge ' Q = Ne

where , N is number of electron flows through the circuit during that time .

∴ 5000 = Ne

N = 5000/1.6×10⁻¹⁹ [∵charge of electron = 1.6× 10⁻¹⁹C]

• N = 5× 10¹⁶/1.6 = 3.125×10¹⁶

Number of electron flows through circuit during that time is 3.125 × 10¹⁶