question_answer

ASSERTION: Electron has a negative charge.

REASON: Electrons move always from a region of higher potential to a region of lower potential.

A) If both assertion and reason are true and reason is the correct explanation of assertion.

B) If both assertion and reason are true and reason is not the correct explanation of assertion.

C) If assertion is true but reason is false.

D) If both assertion and reason are false.

E) If assertion is false but reason is true.

Correct Answer: C

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 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.