Electromagnetism Flashcards
1
Q
What does electric current in a conductor produce?
A
A magnetic field around it
2
Q
What is a soft iron core and a solenoid often referred to as?
A
An electromagnet
3
Q
How does a current-carrying wire in a magnetic field produce a force?
A
By the interaction of two magnetic fields
4
Q
When is there a force on a charged particle?
A
When it moves in a magnetic field as long as its motion is NOT parallel to the field
5
Q
What does a change in direction of field or current result in?
A
Change in the direction of force
6
Q
What does an increase in strength of field or current result in?
A
Increase in the force
7
Q
What does an increase in number of turns on the coil result in?
A
Increase in the force
