# Year 12 - Electricity

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Electricity is the most adaptable vitality source that we have and it is a type of energy resulting because of the presence of charged particles, (for example, electrons or protons), either statically as an aggregation of charge or progressively as a current.

Questions and Answers
• 1.

### What is the most versatile form of energy?

• A.

Mechanical energy

• B.

Heat energy

• C.

Nuclear energy

• D.

Electric energy

Correct Answer
D. Electric energy
Explanation
Electric energy is the most versatile form of energy because it can be easily converted into other forms of energy such as mechanical energy, heat energy, and even nuclear energy. It can be generated from various sources including fossil fuels, nuclear power, renewable sources like solar and wind, and can be used for a wide range of applications such as powering electronic devices, transportation, heating, and lighting. Additionally, electric energy can be efficiently transmitted over long distances, making it highly adaptable and suitable for various needs and purposes.

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• 2.

### Electricity is the form of_____

• A.

Power

• B.

Electric

• C.

Matter

• D.

Atom

Correct Answer
B. Electric
Explanation
Electricity is the form of energy that is generated by the flow of electric charge. It is not a form of power, but power is the rate at which electricity is used or transferred. Electricity is also not a form of matter, as it does not have mass or occupy space. While electricity is related to atoms, it is not the form of an atom itself. Therefore, the correct answer is "Electric."

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• 3.

### Electricity is divided into two

• A.

Static and dynamic

• B.

Dynamic and current

• C.

Current and static

• D.

None of the above

Correct Answer
C. Current and static
Explanation
Electricity can be categorized into two types: static electricity and current electricity. Static electricity refers to the buildup of electric charges on an object, while current electricity refers to the flow of electric charges through a conductor. Therefore, the correct answer is "Current and static."

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• 4.

### Charges in ____electricity do not move

• A.

Dynamic

• B.

Static

• C.

Current

• D.

Atomic

Correct Answer
B. Static
Explanation
Static electricity refers to the accumulation of electric charges on an object that do not move. Unlike dynamic electricity, where charges flow through a conductor, static electricity occurs when there is an imbalance of positive and negative charges on an object. These charges remain stationary until they have a path to discharge, such as through a conductor or by coming into contact with another object. Therefore, the correct answer is "Static."

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• 5.

### Charges in____electricity moves from one place to another

• A.

Dynamic

• B.

Static

• C.

Current

• D.

Atomic

Correct Answer
C. Current
Explanation
Electricity is the flow of electric charge. In this context, "current" refers to the movement of electric charge from one place to another. Therefore, the correct answer is "Current".

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• 6.

### What is the unit of measurement for the electric current?

• A.

Volt

• B.

Ohms

• C.

Ampere

• D.

Newton

Correct Answer
C. Ampere
Explanation
The unit of measurement for electric current is Ampere. Ampere is the SI unit for measuring the flow of electric charge. It is named after the French physicist André-Marie Ampère, who made significant contributions to the field of electromagnetism. Volt is the unit of measurement for electric potential difference, Ohms is the unit of measurement for electrical resistance, and Newton is the unit of measurement for force.

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• 7.

### What is the unit of measurement for resistance?

• A.

Ohms

• B.

Ampere

• C.

Newton

• D.

Faraday

Correct Answer
A. Ohms
Explanation
The unit of measurement for resistance is Ohms. Ohms is a unit used to measure the opposition to the flow of electric current in a circuit. It is named after the German physicist Georg Simon Ohm, who formulated Ohm's Law, which states that the current passing through a conductor is directly proportional to the voltage and inversely proportional to the resistance. Ampere is the unit of measurement for electric current, Newton is the unit of measurement for force, and Faraday is the unit of measurement for electric charge.

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• 8.

### Which of the following is the source of electricity in an electric circuit?

• A.

Switch

• B.

Cell

• C.

Ammelter

• D.

Voltmeter

Correct Answer
B. Cell
Explanation
A cell is the source of electricity in an electric circuit. A cell, also known as a battery, converts chemical energy into electrical energy. It contains two electrodes, a positive and a negative terminal, and an electrolyte solution. When a circuit is connected to the terminals of the cell, a chemical reaction occurs within the cell, creating a flow of electrons from the negative terminal to the positive terminal. This flow of electrons is what we commonly refer to as electric current, and it powers the devices connected in the circuit.

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• 9.

### Electricity is caused by the removal of____from an atom

• A.

Protons

• B.

Neutrons

• C.

Shells

• D.

Electrons!

Correct Answer
D. Electrons!
Explanation
Electricity is caused by the movement of charged particles, specifically electrons. When electrons are removed from an atom, it creates an imbalance of positive and negative charges, resulting in the flow of electric current. Protons and neutrons are located in the nucleus of an atom and do not participate in the movement of electricity. Shells refer to the energy levels where electrons are located, but their removal does not directly cause electricity. Therefore, the correct answer is electrons.

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• 10.

### Which of the following breaks the flow of electricity in an electric circuit?

• A.

Cell

• B.

Voltmeter

• C.

Resister

• D.

Switch

Correct Answer
D. Switch
Explanation
A switch breaks the flow of electricity in an electric circuit. When the switch is open, it creates a gap in the circuit, preventing the flow of current. This allows the user to control the flow of electricity and turn the circuit on or off as needed. When the switch is closed, it completes the circuit and allows the current to flow uninterrupted. Therefore, a switch is used to break or make the flow of electricity in an electric circuit.

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