Question Detail

PHY 102 Coulomb's law and Electric Fields Objective Question
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Question

For a point charge q in vacuum, what is the formula for the absolute potential V at a distance r from the charge?
Options
A V = <i>k</i><sub>0</sub><i>q r</i>
B V = <i>k</i><sub>0</sub><i>q</i> / <i>r</i>
Correct Answer
C V = <i>k</i><sub>0</sub><i>q</i> / <i>r</i>²
D V = <i>k</i><sub>0</sub><i>r</i> / <i>q</i>
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 10, under 'Absolute Potential', gives the formula: 'V = k0q / r'. This formula shows that potential decreases with increasing distance from the charge.

Hint

Recall the inverse relationship with distance for potential, compared to electric force or electric field, which vary with 1/r².

Question Info

Course: PHY 102
Topic: Coulomb's law and Electric Fields
Type: Objective
Difficulty: Not specified
Question 862 of 1819
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