Electric Charges

What is the principle of conservation of charge?

• The total electric charge in an isolated system remains constant.

• Electric charge can be created and destroyed.

• The total electric charge in a closed system can change over time.

• Electric charge is always positive.

What is the difference between conductors and insulators?

• Conductors allow electric charges to flow freely, while insulators do not.

• Insulators allow electric charges to flow freely, while conductors do not.

• Both conductors and insulators allow electric charges to flow freely.

• Conductors and insulators are the same in terms of electric charge flow.

What happens to the force between two charges if the distance between them is doubled?

• The force remains the same.

• The force decreases to one-half of its original value.

• The force decreases to one-fourth of its original value (inverse square law).

• The force increases to four times its original value.

What does it mean for an object to be electrically neutral?

• An object has more positive charges than negative charges.

• An object has more negative charges than positive charges.

• An object has an equal number of positive and negative charges.

• An object has no charges at all.

What is the unit of electric charge?

• Ampere (A)

• Volt (V)

• Coulomb (C)

• Ohm (Ω)

How do opposite charges interact?

• They repel each other.

• They attract each other.

• They have no effect on each other.

• They neutralize each other.

Can an object have a neutral charge?

• Yes, an object can be neutral if it has equal amounts of positive and negative charges.

• No, an object can only have a positive or negative charge.

• An object can only be neutral if it has no charge at all.

• An object can be neutral if it has more positive charges than negative charges.

What is the net charge if there are +5 units of positive charge and -4 units of negative charge?

• +1

• +2

• -1

• +9

What is an electric field?

• A region around a charged object where other charged objects experience a force.

• A type of energy that can be stored in batteries.

• A measure of the voltage in a circuit.

• A phenomenon that occurs only in magnetic materials.

What is the significance of charge quantization?

• Charge quantization means that electric charge exists in discrete amounts, typically as integer multiples of the elementary charge (e).

• Charge quantization indicates that electric charge can vary continuously without restriction.

• Charge quantization is a principle that states electric charge can only be negative.

• Charge quantization suggests that electric charge is only found in certain materials.