Blog | Voltage Lab

Q: What is the unit of measurement for electric current?

Ampere (A) Electric current is the flow of charge, measured in Amperes.

Q: Which law describes the relationship between voltage, current, and resistance in a circuit?

Ohm's Law Ohm's Law states: V = IR, linking voltage, current, and resistance.

Q: What is the term for the opposition to the flow of electric current?

Resistance Resistance hinders the flow of current, measured in Ohms.

Q: What is the unit of measurement for electrical power?

Watt (W) Power is the rate at which energy is used, measured in Watts.

Q: Which of the following is a good conductor of electricity?

Copper Copper has low resistance, allowing current to flow easily.

Q: What is the difference between AC and DC current?

DC flows in one direction, AC alternates DC flows in a constant direction, AC changes direction periodically.

Q: What is the purpose of a fuse in an electrical circuit?

To protect the circuit from overcurrent Fuses break the circuit if current exceeds a safe limit.

Q: What is the function of a ground wire in a household electrical system?

To carry excess current back to the source Ground wires provide a low-resistance path for fault current.

Q: What is voltage measured in?

Volts Voltage is the electrical potential difference, measured in Volts.

Q: How are resistors connected in a series circuit?

End-to-end Series resistors are connected one after the other in a single path.

Question 1 of 15

What is the unit of measurement for electric current?

Electric current is the flow of charge, measured in Amperes.

Question 2 of 15

Which law describes the relationship between voltage, current, and resistance in a circuit?

Ohm's Law states: V = IR, linking voltage, current, and resistance.

Question 3 of 15

What is the term for the opposition to the flow of electric current?

Resistance hinders the flow of current, measured in Ohms.

Question 4 of 15

What is the unit of measurement for electrical power?

Power is the rate at which energy is used, measured in Watts.

Question 5 of 15

Which of the following is a good conductor of electricity?

Copper has low resistance, allowing current to flow easily.

Question 6 of 15

What is the difference between AC and DC current?

DC flows in a constant direction, AC changes direction periodically.

Question 7 of 15

What is the purpose of a fuse in an electrical circuit?

Fuses break the circuit if current exceeds a safe limit.

Question 8 of 15

What is the function of a ground wire in a household electrical system?

Ground wires provide a low-resistance path for fault current.

Question 9 of 15

What is voltage measured in?

Voltage is the electrical potential difference, measured in Volts.

Question 10 of 15

How are resistors connected in a series circuit?

Series resistors are connected one after the other in a single path.

Question 11 of 15

What happens to the total resistance in a series circuit as more resistors are added?

Total resistance is the sum of individual resistances in series.

Question 12 of 15

What are the three main components of a simple circuit?

A source provides energy, conductors carry the current, and the load uses it.

Question 13 of 15

How are resistors connected in a parallel circuit?

Parallel resistors are connected across the same two points.

Question 14 of 15

What is the relationship between power, voltage, and current?

Power is calculated by multiplying voltage and current (P=VI).

Question 15 of 15

Which of the following is NOT a safety precaution when working with electricity?

Never work on live circuits unless absolutely necessary and with proper training.

Voltage Lab

basic electrical concepts for 1st year apprentice Quiz