An electroscope is a device that detects charge on objects that touch it or are brought near it. John rubs a piece of cotton fabric on a plastic rod and then touches the rod to the electroscope. What methods of charging does John use?
Shareen performs a skit to model a method of charging. In the skit, a painter shakes her hand and gets paint on her. How does the skit model a method of charging?
Which factors affect the strength of the electric force between two objects?
A small, positively charged ball is moved close to a large, positively charged ball. Which describes how the small ball likely responds when it is released?
How does increasing the amount of charge on an object affect the electric force it exerts on another charged object?
Hiro rubs an inflated balloon on his hair, and his hair sticks to the balloon. As he moves the balloon away from his head, how does the electric force change?
Why does Chelsea see sparks as she removes her clothes from the clothes dryer?
How does an object become negatively charged?
Which change increases the electric force between objects?
A plastic rod becomes negatively charged when it is rubbed with a piece of wool. How does the rod become charged?
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