Question

1. How strong is the attractive force between a glass rod with a 0.616 μC charge and a silk cloth with a –0.828 μC charge, which are 9.9 cm apart, using the approximation that they act like point charges? Hint: your answer should be positive.

2. Common static electricity involves charges ranging from nanocoulombs to microcoulombs. How many electrons are needed to form a charge of -4.27 nC? Give your answer in terms of 10¹⁰ electrons.

3. What magnitude point charge creates a 5,156 N/C electric field at a distance of 0.86 m? Give answer in terms of 10^-8.

4. Common static electricity involves charges ranging from nanocoulombs to microcoulombs. How many electrons must be removed from a neutral object to leave a net charge difference of 0.83 μC? Give your answer in terms of 10¹² electrons.

Answer 1