Lesson 13 - Electromagnets Flashcards
1
Q
True or false? Any wire with a current passing through it will produce a magnetic field.
A
True.
2
Q
What is the definition of electromagnets?
A
Any magnet that uses electricity to produce a magnetic field.
3
Q
When all the domains line up in the iron core, can the strength of the magnet be increased?
A
No
4
Q
Would adding an iron core increase the strength of an electromagnet?
A
Yes
5
Q
True or false. The domains of steel all line up.
A
False - not all of the domains line up necessarily.
6
Q
How is resistance measured (use the triangle formula)?
A
Voltage divided by current.
7
Q
The voltage of a circuit with multiple cells is multiplied. True or false?
A
False - they are added.
