Pls ans .ans is 256 how?

Pls ans .ans is 256 how? a.

Hi Madhavi! Here's the answer to your question. Hope you find it helpful. Cheers!
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1 eV = 1.6 x 10-19 ------------> (!)
V=?    W= 4 x 1020 eV.    Q = 0.25C

Using equation (1) We can convert the current value of W to Joules (Reason: Joules is the unit of Work Done)
 

W = 4 x 1020 eV x 1.6 x 10-19
W = 6.4 x 10
W = 64J --------------------> (2)

Substitute the Value of W from equation (2) and find V
Q = 0.25 (given)


V = W/Q
V = 64 / 0.25
V = 256 Volts

Hope this helps! Cheers!

 
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thank u
 
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