Question

Potential at a point A is 3 volt and at a point B is 7 volt, an electron is moving towards A from 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 A it must have more than
or
equal to 4 eV K. E at B.

  (D) When it will reach A, it will have K.E. more than or at least equal to 4eV if it was released from rest at B​

Answer 1

Correct option (A, C) Explanation:   It must have any K.E. at B to reach A SinceRead more on Sarthaks.com - https://www.sarthaks.com/370382/potential-at-a-point-a-is-3-volt-and-at-a-point-b-is-7-volt-an-electron-is-moving-towards-a-from-b

Answer 2

$\huge{\mathcal{BONJOUR \: !!}}$

Refer to the attachment

Option C.