Practical Circuits Quiz

What is Ohm's Law?

• Ohm's Law relates current, voltage, and resistance.

• Ohm's Law is the relationship between current and voltage.

• Ohm's Law states that resistance is directly proportional to voltage.

• Ohm's Law only applies to direct current circuits.

State Ohm's Law equation.

• V = I + R

• V = I / R

• V = I * R

• V = I^R

What is the unit of resistance?

• volt

• watt

• ampere

• ohm

In a series circuit, what happens to the total resistance?

• Decreases

• Stays the same

• Becomes negative

• Increases

How do you calculate the total resistance in a series circuit?

• Multiply the resistance values of each component.

• Divide the resistance values of each component.

• Subtract the resistance values of each component.

• Add up the resistance values of each component.

In a parallel circuit, what happens to the total resistance?

• increases

• decreases

• stays the same

• becomes infinite

How do you calculate the total resistance in a parallel circuit?

• 1/RTotal = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn

• RTotal = R1 - R2 - R3 - ... - Rn

• RTotal = R1 * R2 * R3 * ... * Rn

• RTotal = R1 + R2 + R3 + ... + Rn

What is the purpose of resistors in a circuit?

• The purpose of resistors in a circuit is to increase the flow of electric current and amplify the voltage.

• The purpose of resistors in a circuit is to store electric charge and release it when needed.

• The purpose of resistors in a circuit is to generate heat and provide warmth to the circuit.

• The purpose of resistors in a circuit is to control the flow of electric current and reduce the voltage.

What is the color code for a 10k ohm resistor?

• brown, black, orange, gold

• brown, black, silver, gold

• red, green, orange, gold

• blue, yellow, orange, gold

What is the color code for a 1 megaohm resistor?

• red, black, green, gold

• brown, black, green, gold

• brown, black, blue, gold

• brown, black, yellow, gold