Q1 - UMT Apl Physics - V1

Answer explanation

Please see the image.

According to Coulomb's Law, how does the electric force between two charges change if the distance between them is doubled?

• It doubles

• It halves

• It is reduced to one-fourth

• None of the above

If two positive charges are brought closer together, the electrostatic force between them

• Becomes zero

• Decreases

• Increases

• Remains the same

What does Coulomb's Law describe?

• Magnetic force between two charges

• Gravitational force between two masses

• Electric force between two stationary point charges

• None of these

A point charge has negligible size.

• True
• False

The induction of electric charges requires physical contact between charged objects

• True
• False

The total charge of an isolated system is:

• Variable

• Always negative

• Always positive

• Constant

What is the primary factor that causes charge separation during electric induction?

• Gravity

• Magnetic fields

• Electric fields

• Friction

There is a small energy band gap between valence and conduction bands of a Semi conductor material.

• True
• False