Electricity Quiz

What is voltage?

• Voltage is the flow of electric current in a circuit.

• Voltage is the difference in electric potential between two points.

• Voltage is the measure of the amount of electric charge.

• Voltage is the resistance to the flow of electric current.

Define current and its unit of measurement.

• Current is measured in Ohms (Ω).

• Current is measured in Amperes (A).

• Current is measured in Watts (W).

• Current is measured in Volts (V).

Explain the concept of resistance in an electrical circuit.

• Resistance in an electrical circuit is the opposition to the flow of electric current. It is measured in ohms and is caused by the material and dimensions of the conductor.

• Resistance in an electrical circuit is the force that pushes electric current forward

• Resistance in an electrical circuit is not affected by the material of the conductor

• Resistance in an electrical circuit is the same as impedance

What is a circuit and how does it work?

• A circuit is a type of race track for cars and motorcycles

• A circuit is a type of cooking utensil used to mix ingredients together

• A circuit is a closed loop through which an electric current can flow, consisting of a power source, conductive material, and a load. When the circuit is complete, the current can flow from the power source, through the conductive material, and into the load, which then converts the electrical energy into another form of energy.

• A circuit is a type of exercise routine that involves a series of different movements

Differentiate between a conductor and an insulator.

• Conductors are used in electrical insulation, while insulators are used in electrical circuits.

• Conductors have high resistance to electric current, while insulators have low resistance.

• Conductors allow the flow of electric current due to the presence of free electrons, while insulators do not allow the flow of electric current as they have very few free electrons.

• Conductors have a negative charge, while insulators have a positive charge.

Give an example of a good conductor and a good insulator.

• Silver is a good conductor, while plastic is a good insulator.

• Gold is a good conductor, while paper is a good insulator.

• Copper is a good conductor, while rubber is a good insulator.

• Aluminum is a good conductor, while glass is a good insulator.

Tags

NGSS.HS-PS2-6

What is the unit of measurement for resistance?

• Ampere (A)

• Watt (W)

• Ohm (Ω)

• Volt (V)

Explain the relationship between voltage and current in a series circuit

• If the voltage of a circuit increases then the current will also increase and make bulbs brighter

• Voltage does not affect the amount of current in a circuit

• If voltage increases then the current increases and bulbs get dimmer

• If voltage decreases then the bulbs get brighter

How does the flow of electrons differ in conductors and insulators?

• In conductors, electrons are free to move, while in insulators, electrons are tightly bound and cannot move easily.

• In conductors, electrons are tightly bound, while in insulators, electrons are free to move.

• In conductors, electrons are not involved in the flow of electricity, while in insulators, electrons are the main carriers of electricity.

• In conductors, electrons are positively charged, while in insulators, electrons are negatively charged.

Tags

NGSS.HS-PS2-5

In this circuit which bulb(s) would be on if only switch Z and Y were closed?

• 1

• 1 + 2

• All of them

• 3