MAGNETIC FIELDS OF ELECTRIC CURRENTS [P15.2] Flashcards
[P15.2]
1
Q
how is a magnetic field produced around a wire
A
when current passes through the wire
2
Q
STRENGTH of the magnetic field is increased by
A
- increasing curent
- reducing distance from the wire
- shaping wire into WIRE
- adding an IRON CORE
3
Q
ELECTROMAGNET
A
solenoid w/ an iron core
4
Q
S-pole
A
current is CLOCKWISE
5
Q
N-pole
A
current is ANTICLOCKWISE
