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Q. 30 - Excercises And Problems

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 625

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Short Answer

What are the strength and direction of an electric field that will balance the weight of a 1.0 g plastic sphere that has been charged to -3.0 nC?

The electric field that will balance the weight is

See the step by step solution

Step by Step Solution

Step 1: Given information

mass of the sphere

charge of the sphere

Step 2: Explanation

In order to balance the weight of the sphere, the electric force must be equal in magnitude to the weight of the sphere:

Solving the equation for E, we find the strength of the electric field:

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