question_answer

A uniform electric field pointing in positive x-direction exists in a region. Let A be the origin, B be the point on the x-axis at \[x=+1\]cm and C be the point on the y-axis at \[y=+1\]cm. Then the potentials at the points A, B and C satisfy                                                               [IIT-JEE (Screening) 2001]

A)            \[{{V}_{A}}<{{V}_{B}}\]

B)                                      \[{{V}_{A}}>{{V}_{B}}\]

C)            \[{{V}_{A}}<{{V}_{C}}\]   

D)            \[{{V}_{A}}>{{V}_{C}}\]

Correct Answer: B

Solution :

 Potential decreases in the direction of electric field. Dotted lines are equipotential lines \ \[{{V}_{A}}={{V}_{C}}\] and \[{{V}_{A}}>{{V}_{B}}\]