Electricity & Magnetism Review

Electricity & Magnetism Review

Multiple Choice

How do you calculate current

• Resistance X Voltage
• Voltage X Resistance
• Resistance ÷ Voltage
• Voltage ÷ Resistance

Multiple Choice

How do you calculate voltage?

• Current X Resistance
• Resistance ÷ Current
• Current ÷ Resistance
• Measure it with a ruler

Multiple Choice

What is voltage measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

Multiple Choice

What is resistance measured in?

• Ω (Ohms)
• V (Volts)
• A (Amps)
• W (Watts)

Multiple Choice

What 'flows' in a wire?

• Protons
• Neutrons
• Atoms
• Electrons

Multiple Choice

Which direction does convention current flow?

• Positive to negative
• Negative to positive
• Negative to Negative
• Positive to Positive

Multiple Choice

This is an example of a ______ circuit

• Series
• Parallel
• Open
• Dihexihedral

Multiple Choice

This is an example of a _______ circuit

• open
• series
• parallel
• square

Multiple Choice

The picture shows an electrical circuit. This circuit is a series circuit because: 

• It has 3 light bulbs.
• The same current flows through all three light bulbs.
• It uses a single battery.
• The electrical current is divided between the three light bulbs.

Multiple Choice

What is Resistance?

• the degree to which a circuit component opposes the passage of an electric current, causing energy dissipation
• How hard the energy is pushed
• The amount of charges that pass by a given point per second
• None of the above

Multiple Choice

How to you calculate the total resistance in a series circuit?

• R1 + R2+ R3

• R1 - R2 - R3

• 1/R1 + 1/R2 + 1/R3

• R1 = R2 = R3

Multiple Choice

What is the equivalent or total resistance (R_e) across this circuit?

• 3 kΩ

• 10 kΩ

• 13 kΩ

• 18 kΩ

Multiple Choice

The equivalent resistance in this circuit is 

• 100 ohms
• 450 ohms
• 400 ohms
• 30 ohms

Multiple Choice

How would the equivalent resistance be determined?

• 1 / Req = (1/5) + (1/8) + (1/3) Ω

• 120 Ω

• 1.5189873 Ω

• 1 / Req = (1/5) * (1/8) * (1/3) Ω

Multiple Choice

How do you calculate total resistance in a parallel circuit?

• R1 + R2 + R3

• R1 - R2 - R3

• 1/R1 +1/R2 + 1/R3 = 1/RT

• R1 = R2 = R3

Multiple Choice

Which of the following is a material that a magnet would attract?

• Plastic

• Aluminum

• Wood

• Iron

Multiple Choice

If you place the North pole of a magnet next to the South pole of another magnet, they will:

• Attract
• Repel
• Do nothing
• Shatter

Multiple Choice

What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field

Multiple Choice

As the distance between two magnets increases (they get farther apart), the force between them:

• Increases
• Decreases
• Stays the Same

Multiple Choice

What will happen when these magnets are brought close together?

• They will attract each other.
• They will repel each other.
• Both magnets will turn to the left
• Both magnets will turn to the right

Multiple Choice

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

Multiple Choice

What two forces are required for generators and electric motors to work?

• magnetism and thermal

• electricity and thermal

• electricity and magnetism

• magnetism and radiant