When a car uses chemical energy and transforms it to mechanical energy, energy is destroyed in the process.
a
True
b
False
2 answers
False
Maria makes an electromagnet shown in the figure below. The battery has a voltage of 6.0V, and she uses an iron nail. Which of the following would increase the strength of the magnetic field produced?
a
Changing the battery to a 3.0V battery.
b
Doubling the number of times the wire wraps around the nail.
c
Replacing the iron nail with one made of plastic.
d
Reversing the direction of the current flow.
a
Changing the battery to a 3.0V battery.
b
Doubling the number of times the wire wraps around the nail.
c
Replacing the iron nail with one made of plastic.
d
Reversing the direction of the current flow.
1 answer