Question Detail

PHY 102 ELECTROSTATICS Objective Question

Question

The work W done when moving a charge q between two points A and B with respective electric potentials VA and VB is given by:
Options
A <i>W</i> = <i>q(V<sub>A</sub> - V<sub>B</sub>)</i>.
B <i>W</i> = <i>q(V<sub>B</sub> - V<sub>A</sub>)</i>.
Correct Answer
C <i>W</i> = <i>(V<sub>B</sub> - V<sub>A</sub>) / q</i>.
D <i>W</i> = <i>q * V<sub>A</sub> * V<sub>B</sub></i>.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 17, equation 3.8, explicitly states: 'We can now write equation ( ) as W = q(VB - VA)'. This formula represents the work done by the external agent.

Hint

Refer to equation 3.8 on page 17, which links work done to potential difference.

Question Info