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What is electric charge and how is it measured?

• Electric charge is a property of matter measured in coulombs (C).

• Electric charge is a type of energy measured in volts (V).

• Electric charge is a color property of light measured in lumens.

• Electric charge is a force that can be felt but not measured.

Explain the difference between positive and negative charges.

• Positive charges are electrons; negative charges are protons.

• Opposite charges repel, like charges attract.

• Positive charges are neutrons; negative charges are quarks.

• Positive charges are protons; negative charges are electrons. Opposite charges attract, like charges repel.

What is the unit of electric charge?

• Ohm

• Watt

• Volt

• Coulomb

State Coulomb's Law and its significance in electrostatics.

• F = k * |q1 * q2| * r^2; it applies to gravitational forces.

• Coulomb's Law: F = k * |q1 * q2| / r^2; it quantifies the electrostatic force between charges.

• F = k * (q1 + q2) / r; it describes magnetic forces.

• F = k * (q1 - q2) / r; it relates to thermal energy.

How does the distance between two charges affect the force between them?

• The force between two charges decreases with increasing distance and increases with decreasing distance.

• The force is constant regardless of the distance between the charges.

• The force increases with increasing distance and decreases with decreasing distance.

• The force between two charges is unaffected by distance.

What is the formula for calculating the force between two point charges?

• F = G * (m1 * m2) / r^2

• F = q * E

• F = m * a

• F = k * (|q1 * q2| / r^2)

Describe the concept of electric field and its relation to charge.

• An electric field is a type of energy that can be stored in batteries.

• An electric field is a measure of the temperature of a charged object.

• An electric field is a region around a charge where other charges experience a force, defined as force per unit charge.

• An electric field only exists in a vacuum and has no relation to charges.

What happens when two like charges are brought close together?

• They attract each other.

• They remain stationary.

• They repel each other.

• They combine to form a neutral charge.

How can electric charge be transferred between objects?

• Electric charge can only be transferred through chemical reactions.

• Electric charge is transferred solely through radiation.

• Electric charge cannot be transferred between objects.

• Electric charge can be transferred through conduction, induction, and friction.

What is the principle of conservation of charge?

• Electric charge can be created or destroyed.

• The total electric charge in an isolated system is conserved.

• The total electric charge in a system can fluctuate freely.

• Charge is only conserved in conductive materials.