Ohm's Law Calculations for DC Circuits Quiz…

Q: What is the formula for Ohm's Law?

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

Q: If a circuit has a voltage of 12V and a resistance of 4 Ohms, what is the current?

3 A — Using I = V/R, 12V / 4 Ohms = 3 Amps.

Q: What is the unit of measurement for resistance?

Ohm (?) — Resistance is measured in Ohms (?).

Q: If a 6-Volt battery is connected to a resistor and a current of 2 Amps is measured, what is the resistance of the resistor?

3 Ohms — Using R = V/I, 6V / 2A = 3 Ohms.

Q: What is the unit of measurement for current?

Ampere (A) — Current is measured in Amperes (A).

Q: A resistor has a color code that indicates a resistance of 100 Ohms. If a 10V voltage is applied, what current will flow?

0.1 A — Using I = V/R, 10V / 100 Ohms = 0.1 A.

Q: If a light bulb draws 0.5 Amps from a 120V source, what is the resistance of the light bulb?

240 Ohms — Using R = V/I, 120V / 0.5A = 240 Ohms.

Q: Which of the following describes the relationship between voltage, current, and resistance?

Directly proportional — Current is directly proportional to Voltage and inversely to Resistance.

Q: What happens to the current if the voltage is doubled and the resistance remains the same?

The current is doubled — Using Ohm's Law, doubling the voltage doubles the current, if resistance remains constant.

Q: A circuit has a resistance of 5 Ohms and a current of 2 Amps. What is the voltage across the resistor?

10 V — Using V = I * R, 2A * 5 Ohms = 10V.

Question 1 of 10

What is the formula for Ohm's Law?

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

Question 2 of 10

If a circuit has a voltage of 12V and a resistance of 4 Ohms, what is the current?

Using I = V/R, 12V / 4 Ohms = 3 Amps.

Question 3 of 10

What is the unit of measurement for resistance?

Resistance is measured in Ohms (?).

Question 4 of 10

If a 6-Volt battery is connected to a resistor and a current of 2 Amps is measured, what is the resistance of the resistor?

Using R = V/I, 6V / 2A = 3 Ohms.

Question 5 of 10

What is the unit of measurement for current?

Current is measured in Amperes (A).

Question 6 of 10

A resistor has a color code that indicates a resistance of 100 Ohms. If a 10V voltage is applied, what current will flow?

Using I = V/R, 10V / 100 Ohms = 0.1 A.

Question 7 of 10

If a light bulb draws 0.5 Amps from a 120V source, what is the resistance of the light bulb?

Using R = V/I, 120V / 0.5A = 240 Ohms.

Question 8 of 10

Which of the following describes the relationship between voltage, current, and resistance?

Current is directly proportional to Voltage and inversely to Resistance.

Question 9 of 10

What happens to the current if the voltage is doubled and the resistance remains the same?

Using Ohm's Law, doubling the voltage doubles the current, if resistance remains constant.

Question 10 of 10

A circuit has a resistance of 5 Ohms and a current of 2 Amps. What is the voltage across the resistor?

Using V = I * R, 2A * 5 Ohms = 10V.

Ohm's Law Calculations for DC Circuits Quiz