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Directions for Question: The questions consist of two statements each, printed as assertion and reason. While answering these questions you are required to choose any one of the following four responses:

Assertion: Electrons move away from a region of lower potential to a region of higher potential. Reason: Since an electron has a negative charge. These questions consist of two statements each, printed as Assertion (A) and Reason (R). While answering these questions you are required to choose any one of the following four responses.

A) If both A and R are true, and R is a correct explanation of the A.

B) If both A and R are true, but R is not a correct explanation of the A.

C) If A is true, but R is false.

D) If both A and R are false. 

Correct Answer: A

Solution :

Suppose A and B are two regions having potentials \[{{V}_{1}}\] and \[{{V}_{2}}\] such that \[{{V}_{1}}>{{V}_{2}}.\] So the electric field will be set up from A to B (i.e. from higher potential to lower potential). Now since the electron has got a negative charge, the force experienced by the electron will be in a direction opposite to the direction of the electric field. Hence the electrons move from a region of lower potential to a region of higher potential due to their negative charges.