Question

calculate the total no. of electrons flowing
through a circuit in10 minutes 30 second .if a
current of 50 microampere flows through
electric circuit​

Answer 1

Answer:

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Let us take the current is DC and strictly constant:

♦0.08 A = 0.08 Coulomb/second

♦in 2.5 minutes:

♦2.5 minutes x 60 seconds/minute = 150 seconds

♦So, in 150 seconds (2.5 minutes) the net load passing trough a point in the circuit is:

♦Net Charge = 150 second x 0.08 Coulomb/second = 12 Coulomb

♦So, the net charge is 12 Coulomb.

Answer 2

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When one coulomb charge passes through any cross section of the wire per second,the current passing is one ampere.

Charge of electron ,e=1.6X10^-19C.

Suppose, there are n electrons in 1C charge, then,

ne=1C

n=1/(1.6X10^-19)=6.25X10^18. This number of electrons passes through cross section of a wire carrying 1A current.