Electronics Basics Quiz

What is the purpose of a resistor in an electronic circuit?

• To increase the voltage

• To limit the current

• To generate heat

• To control the brightness

What is the formula to calculate current in a circuit using Ohm's law?

• V = IR

• I = VR

• R = VI

• I = RV

What happens to the current in a circuit if the resistance is increased?

• The current increases

• The current decreases

• The current remains the same

• The current becomes zero

What is the power rating of a resistor?

• The maximum voltage it can handle

• The maximum current it can handle

• The amount of heat it can dissipate

• The resistance value

How can you increase the current in a circuit?

• Increase the resistance

• Decrease the resistance

• Increase the voltage

• Decrease the voltage

What is the maximum voltage that should be applied across a 100 ohm resistor with a power rating of 1/2 watts?

• 7 volts

• 10 volts

• 12 volts

• 14 volts

What happens to the total resistance when resistors are connected in series?

• It increases

• It decreases

• It remains the same

• It becomes zero

What happens to the total resistance when resistors are connected in parallel?

• It increases

• It decreases

• It remains the same

• It becomes zero

What is the process by which a light bulb generates light?

• Incandescence

• Conduction

• Radiation

• Induction

What is the voltage drop of a typical green LED?

• 1 volt

• 2 volts

• 5 volts

• 10 volts