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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.

 
Answers (1)
74 Views
V Vakul

As we have learnt,

 

Work energy relation -

W= U_{f}-U_{i}

 

 

- wherein

U_{f}- \, final\, P.E

U_{i}-\, initial\, P.E.

 

By using, KE = QV \Rightarrow 4 \times 1020 \times 1.6 \times10–19
= 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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