Question Detail

PHY 102 Test Compilation PHY 102 21 Objective Question
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Question

The electric field at 2.0 m from a point charge is 8.0x104 N/C. What is the field at 4.0 m?
Options
A 2.0 x 104 N/C
Correct Answer
B 4.0 x 104 N/C
C 1.6 x 105 N/C
D 3.2 x 105 N/C
Correct Answer

Option A is the correct answer.

Detailed Explanation

E is proportional to 1/r2 (inverse-square law). Doubling the distance divides the field by 22 = 4. E_new = (8.0x104)/4 = 2.0x104 N/C.

Hint

E is proportional to 1/r2 (inverse-square law).

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 21
Type: Objective
Difficulty: Not specified
Question 1307 of 1819
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