Electricity & Magnetism - Topic 4 Lessons 1 & 2 (p. 60-77)

Front

What is a magnet and what materials can it attract?

Back

A magnet is an object that produces a magnetic field and can attract certain materials, primarily those containing iron, nickel, or cobalt.

Front

What happens when an object has equal positive and negative charges?

Back

The object is electrically neutral, meaning it has no overall charge.

Front

What is induction in the context of electricity?

Back

Induction is the process where the electric field of one charged object causes the redistribution of charges in another object without direct contact.

Front

What do like electric charges do to each other?

Back

Like electric charges repel each other, meaning they push away from one another.

Front

What is voltage?

Back

Voltage is the difference in electric potential energy per charge between two points in a circuit, determining how current flows.

Front

What is the relationship between electric current and voltage?

Back

Electric current flows from areas of higher voltage to areas of lower voltage in a circuit.

Front

What is the role of resistance in an electrical circuit?

Back

Resistance is a measure of how much a material opposes the flow of electric current, affecting the overall current in the circuit.

Front

What is the unit of electric current?

Back

The unit of electric current is the Ampere (A).

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load.

Front

What is the difference between conductors and insulators?

Back

Conductors allow electric current to flow easily (e.g., copper), while insulators resist the flow of electric current (e.g., rubber).