A test charge is moved from point ( ) to point ( ) and then to point ( )

PHYSICS · Subjective · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance

Problem

1.5\,\mu\text{C}

test charge is moved from point

A

(

V_A = 80\,\text{V}

) to point

B

(

V_B = 20\,\text{V}

) and then to point

C

(

V_C = 60\,\text{V}

). (i) Calculate the total work an external agent must do to move the charge along the two–step path

A \rightarrow B \rightarrow C

. (ii) Would the required work be different if the charge were moved directly from

A

C

? Briefly justify your answer.