Potential at a point A is 3 volt and at a point B is 7 volt, an electron is moving towards \( \m...

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Potential at a point A is 3 volt and at a point B is 7 volt, an electron is moving towards \( \mathrm{A} \) from \( \mathrm{B} \)
(a) It must have some K.E. at B to reach A
(b) It need not have any K.E. at B to reach A
(c) To reach \( \mathrm{A} \) it must have more than or equal to \( 4 \mathrm{eV} \mathrm{KE} \) at \( \mathrm{B} \)
(d) When it will reach A, it will have K.E. more than or at least equal to \( 4 \mathrm{eV} \) if it was released from rest at \( \mathrm{B} \)
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