summative 2 science

What is electric charge?

Electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field. Protons are positive (+), electrons are negative (−), and neutrons are neutral (0).

What is static electricity?

Static electricity is the build-up of electric charges on an object, typically produced by friction.

What is electric current?

Electric current is the flow of electrons through a conductor, measured in Amperes (A). Current only flows in a closed circuit.

What does voltage represent?

Voltage is the push that makes electrons move, measured in Volts (V) and assessed using a Voltmeter.

What is resistance?

Resistance is the opposition to the flow of electricity, measured in Ohms (Ω) using an Ohmmeter.

What are conductors?

Conductors are materials that allow electricity to pass easily, such as copper, aluminum, iron, and silver.

What are insulators?

Insulators are materials that do not allow electricity to pass easily, such as rubber, plastic, wood, and glass.

What are the basic parts of an electric circuit?

The basic parts of an electric circuit include a battery (source), wires (path), a switch (opens/closes circuit), and a load (such as a bulb or fan).

What is an open circuit?

An open circuit is a broken path where no current flows, resulting in the bulb being off.

What is a closed circuit?

A closed circuit is a complete path where current flows, resulting in the bulb being on.

What is the characteristic of a series circuit?

A series circuit has one path only, the same current everywhere, and if one bulb breaks, all bulbs go out.

What is the characteristic of a parallel circuit?

A parallel circuit has multiple paths, the same voltage across branches, and if one bulb breaks, others stay on.

What is Ohm's Law?

Ohm's Law states that V = I × R, where V is voltage, I is current, and R is resistance.

What is electrical safety?

Electrical safety practices include: not touching outlets with wet hands, replacing damaged wires, not overloading outlets, and turning off appliances when not in use.

Who is Georg Ohm?

Georg Ohm is known for formulating Ohm's Law.

Who is Alessandro Volta?

Alessandro Volta is credited with creating the first battery.

Who is Benjamin Franklin?

Benjamin Franklin conducted studies on electricity and lightning.

Which particle has a negative charge?

Electron

Which material is a conductor?

Copper

What instrument measures voltage?

Voltmeter

What happens in an open circuit?

No current flows.

Which circuit is used in houses?

Parallel circuits.

What does the mnemonic device 'Voltage = Volts' mean?

It emphasizes that voltage is measured in volts.

What does 'Ammeter = measures Amperes (Current)' signify?

It indicates that an ammeter is used to measure electric current in amperes.

What does 'Ohm = Resistance' stand for?

It signifies that resistance is measured in ohms.

What does 'Conductor = Carries electricity' mean?

It denotes that a conductor is a material that allows electricity to pass through it.

What does 'Insulator = Isolates electricity' imply?

It implies that an insulator is a material that does not allow electricity to pass through.