G8 STEM Q4 Lesson Recap/Exam Reviewer 2023m 2023

Ohm’s law is expressed as _____________.

• a. V=IR
• b. V=CR
• c. V=AO
• d. None of above

Two resistors are in series when they ________________.

• a. are connected one after another
• b. are connected to the same point (also called a node)
• c. both a and b
• d. none of the above

Which leg of the LED must be connected to the red wire of the battery? Look at the picture

• a. Anode
• b. Cathode
• c. Any leg is ok
• d. None of the above

What type of circuit connection is in the picture?

• a. Series
• b. Parallel
• c. Series – Parallel
• d. None of the above

Using two resistors in series, you can increase the value of the resistance, hence decreasing the flow of current. Hence, the LED glows _______.

• a. Less
• b. Brighter
• c. LED will not light up
• d. None of the above

It is created by the movement of electrons or charge.

• a. voltage
• b. current/electric energy/electricity
• c. resistance
• d. none of the above

The force that a power source creates at its two ends. This force makes the charge flow around the circuit.

• a. voltage
• b. current
• c. resistance
• d. none of the above

It is always connected across the component whose voltage we are measuring.

• a. voltmeter or multimeter
• b. current
• c. resistance
• d. none of the above

It is the property of having two poles that have opposite physical properties. It decides the direction in which the charge in the circuit will flow.

• a. proton
• b. electron
• c. polarity
• d. none of the above

It is a substance or material that allows electricity to flow through it.

• a. load
• b. power source
• c. conductor
• d. none of the above