E&M Review

GFI plugs, switches, and holiday lights all use the same type of circuit. In this type of circuit, the electricity flows through every resistor of the circuit following a single path.

• parallel
• series
• combination

The circuit shown is a household light diagram. What will happen to the remaining light bulb if one of the light bulbs burns out?

• The remaining bulb will stay lit and not change.
• The remaining bulb will become dimmer.
• The remaining bulb will become brighter.
• The remaining bulb will go out.

The diagram shows two bar magnets. Which of the following describes the interaction between the two magnets?

• The magnetic filed will cancel each other out.
• There will be no interaction between the magnets.
• The magnets will attract each other.
• The magnets will repel each other.

Tags

NGSS.HS-PS3-5

How do opposite charges behave?

• They repel each other.
• They revolve around each other.
• They attract each other.
• They neither attract nor repel.

Tags

NGSS.MS-PS2-3

How do protons and electrons differ in their electric charge?

• Protons are negatively charged; electrons are positively charged.
• Protons are positively charged; electrons are neutral.
• Protons are positively charged; electrons are negatively charged.
• Protons are neutral; electrons are negatively charged.

Tags

NGSS.MS-PS2-3

Many modern equipment can be charged without having to plug a charger into it. This can include phones, medical equipment/sensors in the body, and even some larger applications like vehicles. When objects are charged by ___________, they do not need to touch each other.

• friction
• conduction
• induction
• all of these

Amelia is trying to replace a wire to her car battery which has become damaged. She can only find a smaller diameter wire in the store she is shopping in. How would decreasing the diameter of the wires in a circuit influence the resistance and flow of electrons in the circuit?

• It would decrease the resistance, causing fewer electrons to flow through the circut.
• It would increase the resistance, causing fewer electrons to flow through the circuit.
• It would decrease the resistance by allowing more electrons to flow through the circuit.
• It would increase the resistance by allowing more electrons to flow through the circuit.

An electrical current is defined as the flow of _____ from one point to another:

• neuclei
• atoms
• protons
• electrons

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

A mechanic is working on a vehicle. He places a resistor of 30Ω in a circuit that has a 90 volt battery powering. What current will then flow in the circuit?

• 3 amps
• 60 amps
• 0.33 amps
• 2700 amps

A motor with a resistance of 32Ω is connected to a voltage source. Four amps of current flows in the circuit. What is the voltage of the source?

• 0.13 V
• 8 V
• 128 V
• 200 V