charati1317
05.05.2020 •
Physics
What is power? (2 points)
The magnitude of a force needed to move an object
How much work can be done in a given time
The distance over time that an object moves
The energy needed to create work
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Ответ:
Explanation:
Given:
Charge = q
Electric field strength =
weight of the droplet = mg
The charge is suspended motionless. This is because the electric force on the charge is balanced by the weight of the droplet.
electric force on charged droplet,
This is balanced by the weight,
Equating the two: