Question

A 2_v cell is connected to a 1ohm resistor. How many electrons come out of the negative terminal of the cell in 2minutes?

Answer 1

Answer:

Explanation:

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.

Answer 2

Hii

you are welcome in my ans

i =v/r

i = 2A

q = i*t

q = 2*120=240coulomb

no of electron = 240/1.6*10^-19 =15*10^20

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Hope it may helps you