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# Help me please, - Electrostatics - JEE Main-3

If $4\times 10^{20}eV$ energy is required to move a charge of 0.25 coulomb between two points. Then what will be the potential difference between them

• Option 1)

178V

• Option 2)

256V

• Option 3)

356V

• Option 4)

None of these.

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As we have learnt,

Work energy relation -

$\dpi{100} W= U_{f}-U_{i}$

- wherein

$\dpi{100} U_{f}- \, final\, P.E$

$\dpi{100} U_{i}-\, initial\, P.E$.

By using, KE = QV $\Rightarrow$ 4 $\times$ 1020 $\times$ 1.6 $\times$10–19
= 0.25$\times$ V $\Rightarrow$ V = 256 volt

Option 1)

178V

Option 2)

256V

Option 3)

356V

Option 4)

None of these.

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