Question

A small gla

ss bead has been charged to + 10.0 nC . A small metal ball bearing 2.40 cm above the bead feels a 1.10×10−2 N downward electric force. What is the charge on the ball bearing?

Answer 1

Given:

The electric force between the metal ball bearing and glass bead,

Charge on glass bead,

Distance between the metal ball bearing and glass bead,

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Electric force,

Given:

1. The metal ball bearing is above the glass bead.

2. The metal ball bearing is experiencing a downward electric force.

3. The charge on the glass bead is positive.

Like charges repel and unlike charges attract. The glass bead is attracting the metal ball bearing with a downward force.

So charge on the metal ball should be Negative.

ANSWER:

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