charge

This is the correct answer. Mass, length, and time are the other fundamental properties.

This is incorrect. Temperature is a derived quantity, not a fundamental one.

This is incorrect. Volt is the unit of electric potential difference.

This is incorrect. Ampere is the unit of electric current.

This is the correct answer. Coulomb is the SI unit of electric charge.

This is incorrect. Ohm is the unit of electrical resistance.

This is incorrect. Electrostatic forces are a direct consequence of electric charge.

This is the correct answer. Gravitational forces are caused by mass, not charge.

This is incorrect. Electric currents are the flow of charged particles.

This is incorrect. Magnetic fields are created by moving charges.

This is incorrect. Charge cannot be created or destroyed, only transferred.

This is the correct answer. Charge is quantized, meaning it comes in discrete multiples of the fundamental charge.

This is incorrect. Charge is not continuous; it exists in discrete packets.

This is incorrect. Charge can be both positive and negative.

This is incorrect. This force is due to gravity, not electric charge.

This is the correct answer. Light bulbs use electricity, which is the flow of electric charge.

This is incorrect. Rusting is a chemical reaction, not a phenomenon caused by electric charge.

This is incorrect. Boiling is a change of state caused by heat, not electric charge.

1. The total charge of the system is +1 Coulomb (+3 + (-2) = +1). 2. Yes, there will be a net charge on the system even after the objects come into contact. This is because the law of conservation of charge states that charge cannot be created or destroyed, only transferred. 3. When the two objects come into contact, charges will flow from the object with a higher charge to the object with a lower charge until they reach an equilibrium. This means that both objects will have a charge of +0.5 Coulombs after contact (+1 Coulomb total charge divided by 2 objects).