2024 11 13 COVER Understanding Electricity and Magnetism

How can objects become charged?

• By being placed in a magnetic field

• By gaining or losing electrons

• By being heated

• By being cooled

How do charged objects interact with each other?

• They always repel each other

• They always attract each other

• Like charges repel, unlike charges attract

• Like charges attract, unlike charges repel

What is meant by an electric field?

• A region where magnetic forces are felt

• A region around a charged object where electric forces are exerted

• A field that only exists in conductors

• A field that only exists in insulators

What is meant by current in an electrical circuit?

• The amount of energy used by the circuit

• The flow of electric charge

• The resistance of the circuit

• The voltage across the circuit

How is current measured in a circuit?

• Using a voltmeter

• Using an ammeter

• Using a thermometer

• Using a barometer

What is meant by potential difference?

• The difference in resistance between two points

• The difference in current between two points

• The difference in electric potential energy between two points

• The difference in temperature between two points

What does the rating of a battery or bulb indicate?

• The size of the battery or bulb

• The weight of the battery or bulb

• The voltage and current it can supply or handle

• The colour of the battery or bulb

What is the main difference between series and parallel circuits?

• Series circuits have multiple paths, parallel circuits have one path

• Series circuits have one path, parallel circuits have multiple paths

• Series circuits use more energy, parallel circuits use less energy

• Series circuits are safer than parallel circuits

How does current vary in a series circuit?

• It is the same throughout the circuit

• It varies at each component

• It is zero at the start

• It doubles at each component

How does potential difference vary in a parallel circuit?

• It is the same across each branch

• It varies across each branch

• It is zero across each branch

• It doubles across each branch