To Choose: The correct option.
Answer to Problem 6STP
Option A
Explanation of Solution
Given:
Distance between plates,
Potential difference between the plates,
Weight of the oil drop,
Formula Used:
Electric field strength can be obtained by:
Here, V is the electrostatic potential difference and d is the distance between plates.
The electrostatic force:
Here, q is the charge and E is the strength of the electric field.
Calculation:
The oil drop is suspended in the electric field. So, the electrostatic force must be equal to the weight of the oil droplet.
Substitute the values and solve:
Conclusion:
Thus, option A is correct.
Chapter 21 Solutions
Glencoe Physics: Principles and Problems, Student Edition
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