A 2 volt cell is connected to a 1 ohm resistor. Jow many electrons come out of the negative terminal of the cell in 2 minutes?
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Answered by
312
Given :
Voltage=V=2volts
Resistance=R=1 ohms
Time=2min=2x60=120sec
By Ohm's law : V=IR
⇒I=V/R
⇒2/1=2 A
Charge Q=Ixt
=2x120=240 C
But 1 electron has a charge of 1.6 x10⁻¹⁹ C
Hence number of electrons in 240 C charge will be :
=240/1.6 x10⁻¹⁹
=150x10¹⁹ electrons.
Voltage=V=2volts
Resistance=R=1 ohms
Time=2min=2x60=120sec
By Ohm's law : V=IR
⇒I=V/R
⇒2/1=2 A
Charge Q=Ixt
=2x120=240 C
But 1 electron has a charge of 1.6 x10⁻¹⁹ C
Hence number of electrons in 240 C charge will be :
=240/1.6 x10⁻¹⁹
=150x10¹⁹ electrons.
Answered by
83
Hope this will help
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