Download Physical Science Worksheet Electromagnetism 1. Materials that

Physical Science Worksheet Electromagnetism
1. Materials that allow the charges of an electric current to move freely through them are called
2. According to Ohm’s law, what is the resistance of a light if the voltage is 9.0 volts and the current
is 0.30 amps?
3. An electric current produces a(n)
4. Which compass needle orientation in the figure above might correctly describe the magnet’s field
at that point?
5. Three resistors with values of 4.0 W, 6.0 W, and 10.0 W are connected in parallel. What is their
equivalent resistance?
6. Will the magnets in the figure above attract or repel each other?
7. What type of transformer is transformer B?
8. What type of transformer is transformer A?
9. If the battery is a 9-volt battery and the resistance in the circuit is 18 ohms, how much current is
flowing through the circuit?
10. The buildup of charges on an object is called
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Will removing bulb 1 in circuit B cause bulb 3 to go out?
Which circuit diagram represents circuit B?
Which circuit—A or B—represents a series circuit?
What will happen to bulb 1 in circuit A if the switch is opened?
Which circuit—A or B—is a parallel circuit?
What will happen to bulb 2 in circuit diagram D if bulb 1 burns out?
An electric generator is the opposite of a(n)
18. Lightning is ____.
19. Draw a diagram using bar magnets that best illustrates the orientation of the magnetic domains in
the object shown below? Assume the darker shading on the needles is the north pole.
20. The magnetic field of a bar magnet is shown in the figure above. Is the magnet’s north pole at A or
B?
21. In the United States, power lines can carry power voltages as high as 750,000 V, a step-down
transformer reduces the voltage to ____ for home use.
22. What happens if you break a magnet in half?
23. A device that uses electrical energy as it interferes with the flow of charge is a(n)
24. What is a disadvantage of using fuses?
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How much energy will the bulb use in 1 h?
How much power is delivered to the lightbulb?
What is an alternating current?
Every magnet, regardless of its shape, has two
Superconductors are not commonly used because they
Three resistors with values of 4.0 W, 6.0 W, and 8.0 W, respectively, are connected in series.
What is their equivalent resistance?
31. Which magnetic pole is at the geographic North Pole of Earth?
32. In the schematic diagram above, will there be a current?
33. Will the magnets in the figure above attract or repel each other?