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Two points P\; and\; Q are maintained at the potentials of 10 V and -4 V respectively. The work done in moving 100 electrons from P\; to\; Q  is

  • Option 1)

    -9.60 x 10-17 J

  • Option 2)

    9.60 x 10-17 J

  • Option 3)

    -2.24 x 10-16 J

  • Option 4)

    2.24 x 10-16 J

 

Answers (2)

best_answer

As we learnt in

Potential Difference -

V_{B}-V_{A}=\frac{w}{q}

-

 

 w=(100\bar{e})(V_{Q}-V_{_{P}})

=(-100\times 1.6\times 10^{-19})(-14V)=2.24\times 10^{-16}J


Option 1)

-9.60 x 10-17 J

This is incorrect option

Option 2)

9.60 x 10-17 J

This is incorrect option

Option 3)

-2.24 x 10-16 J

This is incorrect option

Option 4)

2.24 x 10-16 J

This is correct option

Posted by

prateek

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