lesson 2 Flashcards
(5 cards)
1
Q
what is electromagnesium?
A
a magnetic field created around a wire that carries electric current
2
Q
i can sketch the field around a straight current-carrying wire
A
answer in jotter
3
Q
What hand do you use for electron current, and where does it go from? (etc negative-positive, positive to negitive)
A
left hand
negitive to positive
4
Q
What hand do you use for conventional current, and where does it go from? (etc negative-positive, positive to negitive)
A
right hand
positive to negegtive
5
Q
describe the effect of coiling the wire on the strength of a magnetic field
A
coiling of the wire helps to concenetrate the magnetic field in the middle of the coil
