Semester One - Recap Quiz - Oakland 2025

What is voltage?

• The flow of electricity in a circuit

• The push that moves electricity through a circuit

• A material that blocks electricity

• A way to measure light

What happens if you remove the resistor from a circuit with an LED?

• The LED will light up normally

• The LED will not light up

• The LED might burn out

• The circuit will still work but with less power

Which component controls the brightness of an LED?

• Buzzer

• Resistor

• Potentiometer

• Push Button

What happens in a series circuit if one LED is removed?

• The other LEDs will stay on

• The circuit will stop working

• The brightness of the remaining LEDs will increase

• Nothing will happen

Which direction should you connect an LED in a circuit?

• Both legs to the same side

• The long leg (anode) to negative and short leg (cathode) to positive

• It doesn’t matter which direction

• The long leg (anode) to positive and short leg (cathode) to negative

What does a buzzer do in a circuit?

• It makes sound

• It controls current

• It stores electricity

• It lights up

Based on Ohm’s Law, what happens to the current if we increase the resistance in a circuit?

• The current increases

• The current decreases

• The current stays the same

• The current flows faster

Fix the circuit

• The resistor is missing from the circuit.

• The LED is connected in the wrong direction.

• The battery is not connected to the breadboard.

• The LED and resistor are not connected

Fix the circuit

• The battery is not providing enough voltage to power the LEDs

• The two LEDs are not connected properly

• The resistor is too high

• Connecting the wrong pair of legs on the button