1. An electric current in a wire coil produces
a. another current
b. a magnetic field
c. a generator
d. a source of voltage
2. To strengthen an electromagnet,
a. decrease the voltage
b. increase the number of turns in a coil
c. put a non-magnetic substance in the coil
d. limit the battery to one
3. Which is true about electromagnets?
a. they are permanent
b. they do not need a battery
c. increasing the number of coils makes the electromagnet stronger
d. increasing the battery makes the electromagnet weaker
4. You can make an electromagnet stronger by
a. having smaller current in the wire
b. having greener current in the wire
c. having larger current in the wire
d. having water current in the wire
5. An electromagnet is
4. You can make an electromagnet stronger by
a. having smaller current in the wire
b. having greener current in the wire
c. having larger current in the wire
d. having water current in the wire
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Answer:
1. An electric current in a wire coil produces
a. another current
b. a magnetic field
c. a generator
d. a source of voltage
2. To strengthen an electromagnet,
a. decrease the voltage
b. increase the number of turns in a coil
c. put a non-magnetic substance in the coil
d. limit the battery to one
3. Which is true about electromagnets?
a. they are permanent
b. they do not need a battery
c. increasing the number of coils makes the electromagnet stronger
d. increasing the battery makes the electromagnet weaker
4. You can make an electromagnet stronger by
a. having smaller current in the wire
b. having greener current in the wire
c. having larger current in the wire
d. having water current in the wire
5. An electromagnet is
4. You can make an electromagnet stronger by
a. having smaller current in the wire
b. having greener current in the wire
c. having larger current in the wire
d. having water current in the wire
Explanation:
CAARYONLEARNING
Answer:
1:A
2:C
3:B
4:A
5:C
Explanation:
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