Question Detail

PHY 102 Test Compilation PHY 102 20 Objective Question
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Question

Find the value of two equal charges if they repel each other with a force of 0.1N when placed 50cm apart in the vacuum (k = 9.0x109 N.m2/C2).
Options
A -3.4 uC
B -1.7 uC
C 1.7 uC
Correct Answer
D 3.4 uC
Correct Answer

Option C is the correct answer.

Detailed Explanation

Same working as Q8/Q10: q = sqrt(F r2/k) = sqrt[(0.1)(0.5)2/9x109] = 1.67 uC ~ 1.7 uC. Since the charges repel (like charges), the magnitude is taken as positive: 1.7 uC.

Hint

Same working as Q8/Q10: q = sqrt(F r2/k) = sqrt[(0.1)(0.5)2/9x109] = 1.67 uC ~ 1.7 uC.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 20
Type: Objective
Difficulty: Not specified
Question 1275 of 1819
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