10 raise to power 18 electrons move from point a to point B inside a metal wire in 4 seconds what is the current passing through the wire
PLS ANSWER FAST
Answers
Answer:
0.04 A
Explanation:
Charge on an electron = 1.6*10^(-19) C
So, total charge = number of electrons * charge on an electron
= 10^18 * 1.6 * 10^(-19) = 0.16 C
Current = Charge/Time = 0.16/4 = 0.04 Ampere.
10^18 electrons move from point A to point B inside a metal wire in 4 seconds. What is the current passing through the wire?
Current [A]
Now ,
❥ 10¹⁸ electrons move from point A to point B inside a metal wire in 4 seconds.
❥ No. of Electrons = 10¹⁸
❥ Time = 4 second
❥ What is the Current passing through the wire =?
Here we go !
As we all know
Where ,
Current = " I "
Charge = "Q "
Time = "T "
We know the Formula :+
Q = ne [W]
Where ,
Charge = " Q "
No. of Electrons = " n "
Charge on electron = " e "
Therefore '
Now , Let's find out current simply by applying formula :-
✦ What is Current ?
↠ Current is the rate at which electrons flow past a point in a complete electrical circuit. At its most basic, current = flow.
↠ It expresses the quantity of electrons (sometimes called "electrical charge") flowing past a point in a circuit over a given time.
✦ How to calculate Current ?
↠ Current is usually denoted by the symbol I. Ohm's law relates the current flowing through a conductor to the voltage V and resistance R; that is, V = IR. An alternative statement of Ohm's law is I = V/R.
✦ What is the unit of Charge and Electric Current ?
↠Unit of electric charge is coulomb or C, unit of electric current is ampere or A.
Note :-
Ohms Law and Power
[ V = I x R ] V (volts) = I (amps) x R (Ω)
[ I = V ÷ R ] I (amps) = V (volts) ÷ R (Ω)
[ R = V ÷ I ] R (Ω) = V (volts) ÷ I (amps)
[ P = V x I ] P (watts) = V (volts) x I (amps)