IGCSE U8 electricity

Electric field lines represent the:

• a) Path of electrons in a circuit
• b) Path of electric current
• c) Direction of electric field at a point
• d) Flow of charge in a conductor

An electric field is:

• a) The flow of charge in a circuit
• b) A region around a charged object where another charged object experiences a force
• c) The path along which electric current flows
• d) The resistance encountered by a moving charge

Static charge is:

• a) Charge that remains constant over time
• b) Charge that is constantly changing
• c) Charge that is stationary
• d) Charge that flows in a circuit

Alternating potential difference refers to:

• a) A steady flow of charge in one direction
• b) A periodic reversal of the direction of current flow
• c) A constant potential difference across a circuit
• d) The voltage drop across a resistor

Amperes (Amps) is a unit of measurement for:

• a) Electric potential
• b) Electric charge
• c) Electric current
• d) Electric resistance

Attraction occurs between:

• a) Like charges
• b) Discharged objects
• c) Opposite charges
• d) Neutral objects

Coulomb is a unit of measurement for:

• a) Electric potential
• b) Electric charge
• c) Electric current
• d) Electric resistance

A diode is an electronic component that:

• a) Allows current to flow in both directions
• b) Blocks current flow in both directions
• c) Allows current to flow in one direction only
• d) Blocks current flow in one direction only

Direct potential difference refers to:

• a) A steady flow of charge in one direction
• b) A periodic reversal of the direction of current flow
• c) A constant potential difference across a circuit
• d) The voltage drop across a resistor

An earth wire is used to:

• a) Carry the return current in a circuit
• b) Provide insulation in electrical appliances
• c) Ground electrical appliances for safety
• d) Measure electric potential difference