Yr 10 Electricity- test note

What are the basic components that make up an atom?

Atoms are made of protons, neutrons, and electrons.

What happens when electrons are transferred from one object to another?

The object becomes charged; gaining electrons makes it negatively charged, while losing electrons makes it positively charged.

How is electric current defined?

Electric current is the flow of electric charge through a material, typically measured in amperes.

What is the purpose of an ammeter?

An ammeter measures the current flowing in a circuit and must be connected in series.

What are insulators?

Insulators are materials that do not allow electric charge to flow easily because their electrons are tightly bound.

How do conductors differ from insulators?

Conductors allow electric charge to flow easily as their electrons can move freely, unlike insulators.

What happens to total resistance in a series circuit when more components are added?

Total resistance increases as more resistors or components are added in series.

What happens to the current if total resistance in a circuit decreases?

The current increases because less resistance allows charge to flow more easily.

What does voltage measure in a circuit?

Voltage measures the energy that each unit of charge carries in a circuit.

What is the purpose of a fuse in a circuit?

A fuse protects the circuit by breaking if the current gets too high, preventing electrical fires or damage.

What connections are made in a series circuit?

In a series circuit, components are connected one after another in a single loop.

What is the effect of a higher voltage on a lamp's brightness?

A higher voltage gives more energy to the charges, making the lamp shine brighter.

What feature of a three-pin plug helps prevent electric shock?

The earth pin connects to the earth wire to direct excess current safely into the ground.

How does total resistance affect current drawn from a battery?

If total resistance increases, current decreases; if total resistance decreases, current increases.

What role does resistance play when electrical current flows through a conductor?

Resistance converts some electrical energy into heat and sometimes light as the current flows.

What type of circuit allows each component to work independently?

A parallel circuit allows components to work independently; if one component breaks, the others still function.

What is the function of a voltmeter in a circuit?

A voltmeter measures the voltage, indicating the energy gained or lost by electric charge as it passes through components.