Electronics - Resistance and Power - Discussion

13. 

How much energy is stored if 6.24 x 1018 electrons are stored in 4 volts?

[A]. 4 joules
[B]. 1.56 x 1018 electrons
[C]. 1.56 coulombs
[D]. 2.496 x 1019 electrons

Answer: Option A

Explanation:

No answer description available for this question.

Jai said: (Jan 23, 2011)  
I want energy equation.

Saichaitanya said: (Apr 7, 2011)  
STANDARD VALUE of 1 eV = 1.6021 x 10^-19 Joule

In the Question

4 eV = 4*(1.6021 x 10^-19)*(6.24 x 10^18) Joules
= 40*(10^-1)Joules
= 4 Joules

Ahmad said: (Jun 1, 2011)  
Q = NE

Energy Q equal to NE, whre N no of electron and E voltage.

Mamatha said: (Dec 16, 2015)  
Is it right what does Sai Chaithanya said?

Rakesh said: (Sep 22, 2016)  
Please explain in detail. How can I solve?

Vishalakshi said: (Nov 26, 2016)  
Your explanation is clear and correct @Saichaitanya.

Anomi said: (Jul 26, 2018)  
V = Joules/Coulomb.

thus, Joules = Volts * Coulomb.

Convert 6.24x10^18 electrons to coulomb.
1 electron = 1.60x10^-19 coulomb.
1 coulomb = 6.24x10^18 electrons.

Joules = 4(1) = 4J.

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.