U12 - BASIC ELECTRICITY AND MAGNETISM UPDATED QUESTIONS AND
CORRECT ANSWERS
Question:
1. Atom
Answer:
The smallest particle of an element that can exist and maintain its identity; can combine with
other atoms to form new substances.
Question:
2. Atom structure
Answer:
An atom is made up of: Protons - Positive charge particle Electrons - Negative charge particle
Neutrons - Neutrally charged particle
Question:
3. Current
Answer:
Current is the movement of electrons, measured in amperes or amps for short.
Question:
4. The Laws of Charge
Answer:
Like charges repel and unlike charges attract.
Question:
5. Conductor
Answer:
A conductor is a material that allows its electrons to move easily. Usually metal like copper,
silver, aluminum, gold and mercury.
Question:
6. Insulator
Answer:
A material that resist the flow of electrons or electricity. Usually glass, plastic or rubber.
Question:
7. Magnet
Answer:
Magnets have poles designated as north and south. Like poles repel and unlike poles attract.
Question:
8. Lines of force or Field of force
, Answer:
The area around the magnet that is affected by the strength of the magnet field.
Question:
9. Electricity produced from magnetism
Answer:
If a conductor, such as a copper wire, crosses the line of force, the outer electrons in the atoms in
the wire are freed.
Question:
10. Direct Current (DC)
Answer:
Electron current that travels in one direction. Flows from negative to positive.
Question:
11. Alternating Current (AC)
Answer:
Electron current that continually and rapidly reverses direction.
Question:
12. Units of Electrical measurement
Answer:
Voltage, Amperage (current) and Resistance
Question:
13. Volt
Answer:
The amount of electrical pressure required to force one ampere through a resistance of one ohm.
Measured with a volt meter.
Question:
14. Voltage
Answer:
The difference in electrical potential between two points. Measured with a volt-meter
Question:
15. Amperage
Answer:
Amperage is the measurement of amount electron moving past a point. Measured with an Amp
clamp.
Question:
16. Resistance
Answer:
CORRECT ANSWERS
Question:
1. Atom
Answer:
The smallest particle of an element that can exist and maintain its identity; can combine with
other atoms to form new substances.
Question:
2. Atom structure
Answer:
An atom is made up of: Protons - Positive charge particle Electrons - Negative charge particle
Neutrons - Neutrally charged particle
Question:
3. Current
Answer:
Current is the movement of electrons, measured in amperes or amps for short.
Question:
4. The Laws of Charge
Answer:
Like charges repel and unlike charges attract.
Question:
5. Conductor
Answer:
A conductor is a material that allows its electrons to move easily. Usually metal like copper,
silver, aluminum, gold and mercury.
Question:
6. Insulator
Answer:
A material that resist the flow of electrons or electricity. Usually glass, plastic or rubber.
Question:
7. Magnet
Answer:
Magnets have poles designated as north and south. Like poles repel and unlike poles attract.
Question:
8. Lines of force or Field of force
, Answer:
The area around the magnet that is affected by the strength of the magnet field.
Question:
9. Electricity produced from magnetism
Answer:
If a conductor, such as a copper wire, crosses the line of force, the outer electrons in the atoms in
the wire are freed.
Question:
10. Direct Current (DC)
Answer:
Electron current that travels in one direction. Flows from negative to positive.
Question:
11. Alternating Current (AC)
Answer:
Electron current that continually and rapidly reverses direction.
Question:
12. Units of Electrical measurement
Answer:
Voltage, Amperage (current) and Resistance
Question:
13. Volt
Answer:
The amount of electrical pressure required to force one ampere through a resistance of one ohm.
Measured with a volt meter.
Question:
14. Voltage
Answer:
The difference in electrical potential between two points. Measured with a volt-meter
Question:
15. Amperage
Answer:
Amperage is the measurement of amount electron moving past a point. Measured with an Amp
clamp.
Question:
16. Resistance
Answer:
