Understanding Resistors Quiz

What is the primary function of a resistor in an electrical circuit?

• To increase the voltage

• To store electrical energy

• To limit the flow of electric current

• To convert electrical energy into light

Which color code on a resistor indicates the first band as "0"?

• Black

• Brown

• Red

• Orange

In a series circuit with two resistors, if one resistor has a resistance of 4 ohms and the other has a resistance of 6 ohms, what is the total resistance?

• 2 ohms

• 10 ohms

• 24 ohms

• 5 ohms

What does the third band (multiplier) on a resistor with color bands brown, black, red, and gold represent?

• 1

• 10

• 100

• 1000

Which of the following is NOT a common application of resistors?

• Voltage division

• Amplifying signals

• Limiting current

• Pull-up/pull-down in digital circuits

In a parallel circuit with two resistors of 6 ohms each, what is the total resistance?

• 12 ohms

• 3 ohms

• 6 ohms

• 0.5 ohms

What property of a resistor determines how much it resists the flow of current?

• Capacitance

• Inductance

• Resistance

• Conductance

How does increasing the resistance in a circuit affect the current, assuming the voltage remains constant?

• Increases the current

• Decreases the current

• Does not affect the current

• Doubles the current

What is the tolerance of a resistor with a gold tolerance band?

• 1%

• 2%

• 5%

• 10%

In a circuit, if a resistor is used to reduce the brightness of an LED, what is the resistor acting as?

• A voltage source

• A current limiter

• A power amplifier

• A light sensor