DC Circuit Fundamentals: Voltage, Current,…

Q: What is the unit of measurement for voltage?

Volt (V) — Voltage is measured in Volts, representing electrical potential difference.

Q: What is the unit of measurement for current?

Ampere (A) — Current is the flow of charge, measured in Amperes.

Q: What is the unit of measurement for resistance?

Ohm (?) — Resistance opposes current flow, measured in Ohms.

Q: Which of the following describes Ohm's Law?

V = I * R — Ohm's Law states Voltage (V) equals Current (I) multiplied by Resistance (R).

Q: What is the voltage across a resistor with 2 Amps of current flowing through it and a resistance of 10 Ohms?

20 V — V = I * R = 2A * 10? = 20V

Q: What is the current flowing through a 100 Ohm resistor with a voltage of 10V across it?

0.1 A — I = V/R = 10V / 100? = 0.1A

Q: Which component opposes the flow of current in a DC circuit?

Resistor — Resistors are designed to resist current flow.

Q: What happens to the current in a circuit if the voltage is increased, assuming resistance remains constant?

Increases — According to Ohm's law, increasing voltage increases the current.

Q: What type of circuit provides only one path for current flow?

Series circuit — A series circuit has only one path for current.

Q: What happens to the total resistance in a series circuit as you add more resistors?

Increases — The total resistance in a series circuit is the sum of individual resistances, therefore increases.

Question 1 of 10

What is the unit of measurement for voltage?

Voltage is measured in Volts, representing electrical potential difference.

Question 2 of 10

What is the unit of measurement for current?

Current is the flow of charge, measured in Amperes.

Question 3 of 10

What is the unit of measurement for resistance?

Resistance opposes current flow, measured in Ohms.

Question 4 of 10

Which of the following describes Ohm's Law?

Ohm's Law states Voltage (V) equals Current (I) multiplied by Resistance (R).

Question 5 of 10

What is the voltage across a resistor with 2 Amps of current flowing through it and a resistance of 10 Ohms?

V = I * R = 2A * 10? = 20V

Question 6 of 10

What is the current flowing through a 100 Ohm resistor with a voltage of 10V across it?

I = V/R = 10V / 100? = 0.1A

Question 7 of 10

Which component opposes the flow of current in a DC circuit?

Resistors are designed to resist current flow.

Question 8 of 10

What happens to the current in a circuit if the voltage is increased, assuming resistance remains constant?

According to Ohm's law, increasing voltage increases the current.

Question 9 of 10

What type of circuit provides only one path for current flow?

A series circuit has only one path for current.

Question 10 of 10

What happens to the total resistance in a series circuit as you add more resistors?

The total resistance in a series circuit is the sum of individual resistances, therefore increases.

DC Circuit Fundamentals: Voltage, Current, Resistance Quiz