Name and define the SI unit of current. Calcu | vedclass

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(A) The $SI$ unit of electric current is the ampere $(A)$.One ampere is defined as the flow of $1$ coulomb of charge per second through a conductor $(

Vedclass · Accepted Answer

Ampere,$6.25 	imes 10^{18}$ electrons

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(A) The $SI$ unit of electric current is the ampere $(A)$.One ampere is defined as the flow of $1$ coulomb of charge per second through a conductor $(1 	ext{ A} = 1 	ext{ C/s})$.To calculate the number of electrons $(n)$: Given: Current $(I)$ = $1 	ext{ A}$,Time $(t)$ = $1 	ext{ s}$,Charge on an electron $(e)$ = $1.6 	imes 10^{-19} 	ext{ C}$.Using the formula $Q = I 	imes t$ and $Q = n 	imes e$,we get $n = \frac{I 	imes t}{e}$.$n = \frac{1 	ext{ A} 	imes 1 	ext{ s}}{1.6 	imes 10^{-19} 	ext{ C}} = \frac{1}{1.6} 	imes 10^{19} = 6.25 	imes 10^{18}$.Thus,$6.25 	imes 10^{18}$ electrons flow through the conductor in $1$ second.

Name and define the $SI$ unit of current. Calculate the number of electrons that flow through a conductor in $1$ second to constitute a current of $1$ ampere. (Charge on an electron $= 1.6 \times 10^{-19} \text{ C}$)

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