Physics and Electromagnetism Quiz

Which statement best explains why there could be a force of attraction between two electrically charged objects?

• because they have like charges

• because they have unlike charges

• because they have the same number of protons

• because they have the same number of electrons

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NGSS.HS-PS2-4

How much current flows through this circuit?

• 0.5 A

• 1 A

• 2 A

• 3 A

This diagram represents a closed circuit with three light bulbs and a 10-volt battery. If Bulb 3 burns out in the circuit, what will most likely happen?

• Bulb 1 and Bulb 2 will continue to glow.

• Bulb 1 and Bulb 2 will not glow as brightly.

• Bulb 1 will glow, but Bulb 2 will not glow.

• Bulb 1 and Bulb 2 will not glow.

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NGSS.HS-PS2-5

How could 3 magnets be arranged end-to-end so that there will be no attraction between them?

• N S S N N S

• S N N S N S

• N S N S S N

• S N S N S N

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is NOT an example of alternating current? I. Dry cell battery in a flashlight II. Television set III. Current the power company sends to your school

• I only

• II only

• III only

• I and II only

What will be the result when the two spheres touch?

• Sphere 1 will become positively charged.

• Sphere 2 will become positively charged.

• Both spheres will become negatively charged equal to the initial charge of Sphere 1.

• Both spheres will become negatively charged less than the initial charge of Sphere 1.

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-5

In a closed circuit containing one resistor and a battery, if the voltage in the battery increases, the current going through the resistor increases. Why does this occur?

• as the electrons are sped up, they bunch closer together

• as the electrons have more energy, they vibrate more rapidly

• as the electrons are pushed more by the battery, they move faster through the circuit

• as the distance around the circuit increases, the electrons take longer to travel around

A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or parallel?

• Unscrew one light. If the other lights stay on, it's a series circuit.

• Unplug the strand. If the first light stays on, it's a series circuit.

• Unscrew one light. If the other lights turn off, it's a series circuit.

• Cut the strand in half. If the plugged in half stays on, it's a series circuit.

The same battery and bulbs are wired in two different ways in two different circuits, as shown in the illustration. What will be one difference in the circuits?

• The battery will lose power more quickly in Circuit 2.

• More wire will be required to make Circuit 1.

• Circuit 1 will have a higher voltage.

• Circuit 2 will have fewer bulbs.

Students attached both ends of a long wire to the poles of a battery and wrapped the wire around a spoon. In this arrangement, the spoon is able to pick up five paper clips. The students wrap more wire around the spoon and want to determine if the strength of the magnetic force has increased. Which of the following observations would indicate that wrapping more wire has increased the strength of the electromagnet?

• More wire was needed to wrap around the spoon.

• The spoon now picks up seven paper clips.

• Eventually, the battery runs out of energy.

• The ends of the wire must touch the battery's poles.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5