PS2.1 and PS2.2

What is an example of electric discharge?

• Thunder

• Lightning

• Rain

• Wind

What is the relationship between voltage and current in a circuit?

• Voltage is the potential difference that drives current through a circuit.

• Voltage and current are independent of each other.

• Current is the potential difference that drives voltage through a circuit.

• Voltage is the same as current in a circuit.

What is the principle of conservation of charge?

• Charge can be created and destroyed.

• Charge can neither be created nor destroyed; it can only be transferred.

• Charge can be transferred but not created.

• Charge can be created but not destroyed.

What is the difference between conductors and insulators?

• Conductors allow electric charge to flow easily, while insulators do not.

• Insulators allow electric charge to flow easily, while conductors do not.

• Both conductors and insulators allow electric charge to flow easily.

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

What is the function of a step-up transformer?

• It decreases voltage.

• It increases voltage.

• It converts AC to DC.

• It stores electrical energy.

What is the difference between alternating current (AC) and direct current (DC)?

• AC flows in one direction, while DC changes direction periodically.

• AC changes direction periodically, while DC flows in one direction.

• AC is used in batteries, while DC is used in power lines.

• AC is more efficient than DC for long-distance transmission.

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 harnessed for power.

• An area where magnetic forces are present.

• A vacuum where no forces act on charged objects.

What is static electricity?

• A flow of electric current through a conductor.

• An imbalance of electric charges within or on the surface of a material.

• A type of electric circuit that is always open.

• A phenomenon that occurs only in wet conditions.

What happens to an object that is electrically charged?

• It has gained or lost electrons.

• It has increased in mass.

• It has become a magnet.

• It has changed its color.

What is electromagnetic induction?

• The process of generating electric current from a changing magnetic field.

• The process of generating magnetic fields from electric currents.

• The phenomenon where electric current is converted into light energy.

• The method of storing electric energy in magnetic fields.