Question Detail

PHY 102 Test Compilation PHY 102 20 Objective Question
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Question

Two equal charges repel each other with a force of 0.1 N when placed 50 cm apart in vacuum (k = 9x109 N.m2/C2). Find the value of each charge.
Options
A 1.7 uC
B 1.67 uC
Correct Answer
C 1.086 uC
D 10.86 uC
Correct Answer

Option B is the correct answer.

Detailed Explanation

F = kq2/r2 => q = sqrt(F r2/k) q = sqrt[(0.1)(0.5)2/(9x109)] = sqrt[0.025/9x109] = sqrt(2.78x10-12) = 1.667x10-6 C = 1.67 uC.

Hint

F = kq2/r2 => q = sqrt(F r2/k) q = sqrt[(0.1)(0.5)2/(9x109)] = sqrt[0.025/9x109] = sqrt(2.78x10-12) = 1.667x10-6 C = 1.67 uC.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 20
Type: Objective
Difficulty: Not specified
Question 1232 of 1819
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