L1 Electrical Scientific Principles Part 2

Multiple Choice

Why is it important for everyone to follow classroom expectations?

• It makes the classroom look nice. And that's what matters.

• It helps everyone have a an environment for learning and it allows everyone to stay safe.

• It's only important to the teacher and the school.

• It allows selfish people to do whatever they want. Other people don't matter. Only they matter!

Multiple Choice

Which of the following is a key reason to study electrical science and technology?

• To understand how electrical devices work

• To learn about ancient history

• To improve cooking skills

• To study plant biology

Multiple Choice

What is electricity?

• Electricity is the movement of air particles.
• Electricity is the flow of electric charge through a conductor.
• Electricity is the flow of water through a pipe.

Multiple Choice

The area around a magnet is called the .....

• attraction zone

• work area

• magnetic field

• hot zone

Multiple Choice

Which of the following is NOT one of the three effects of electrical current?

• Thermal

• Chemical

• Magnetic

• Optical

Multiple Choice

The strongest parts of the magnet are ...

• fronts

• backs

• poles

• middle

Multiple Choice

A compass needle responds to a magnetic field, because the compass needle is a

• A. generator.
• B. motor.   
• C. magnet.
• D. transformer.

Multiple Choice

What is the voltage of a 60 ohm, 2 amp device?

• 30
• 0.033
• 10.95
• 120

Multiple Choice

This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?

• 3 Amps
• 192 Amps
• 2 Amps
• 4 Amps

Multiple Choice

If a current of 3A flows for 5 seconds, what is the total charge transferred?

• 8 coulombs

• 15 coulombs

• 10 coulombs

• 5 coulombs

Multiple Choice

Which formula correctly relates charge (Q), current (I), and time (t)?

• Q = I x t

• Q = I ÷ t

• Q = t ÷ I

• Q = t x I

Multiple Choice

How can you calculate the value of current if you know the charge and the time?

• I = Q ÷ t

• I = Q x t

• I = t ÷ Q

• I = Q + t

Open Ended

Explain how the formula triangle helps in rearranging equations for charge, current, and time.

Multiple Choice

this is the symbol for a _____?

• switch
• light 
• battery
• emoji

Open Ended

Describe the relationship between voltage, current, and resistance in an electrical circuit according to Ohm's law.

Multiple Select

Which of the following statements about Ohm's law is correct?

• Voltage is equal to current multiplied by resistance.

• Current is equal to voltage plus resistance.

• Resistance is equal to voltage divided by current.

• Current is equal to resistance divided by voltage.

Multiple Choice

If a resistor is 10Ω and the voltage is 20V, what is the current flowing through the circuit?

• 0.5A

• 1A

• 2A

• 10A

Multiple Choice

In a series circuit, how do you calculate the total resistance when two resistors are connected end to end?

• Multiply the resistances

• Add the resistances

• Subtract the smaller resistance from the larger one

• Divide the larger resistance by the smaller one

Multiple Select

Which of the following statements about parallel circuits is/are correct?

• Current splits into two paths

• Voltage across each resistor is different

• Ohm’s law can be used on each part of the circuit

• Voltage across each resistor is the same

Multiple Select

Which formula is used to calculate the total resistance in a parallel circuit with two resistors?

• 1/RT = 1/R1 + 1/R2

• RT = R1 x R2 / (R1 + R2)

• RT = R1 - R2

• RT = (1/R1 + 1/R2)

Multiple Select

Select all correct statements about parallel circuits based on the slides.

• The total resistance is always less than the smallest resistor in parallel.

• Current splits into multiple paths in parallel circuits.

• The voltage across each resistor in parallel is different.

• The total current is the sum of the currents through each resistor.

Multiple Choice

What is the total resistance when three resistors of 6Ω each are connected in parallel?

• 2Ω

• 6Ω

• 18Ω

• 0.5Ω