magnetism

Question 1

Domain

Answer 1

Group of atoms having a similar magnetic orientation

Question 2

Right-hand rule for current x magnetic field

Answer 2

Curl right hand with thumb pointing in positive current, fingers point in direction of magnetic field

Question 3

Right-hand rule for magnetic force

Answer 3

Thumb: velocity
Palm: FB
4 fingers: B

Question 4

Equation for Magnetic Field of a wire

Answer 4

B = µ0 * I / (2 * pi * r)

Question 5

Equation for Magnetic Force for uniform magnetic fields

Answer 5

FB = qvB*sin(theta)

Question 6

Properties of motion due to magnetic field

Answer 6

Circular motion (Fc = FB)
Positive: right hand rule
Negative: Right-hand rule but in reverse

Question 7

Equation of Magnetic Force for current-carrying wires

Answer 7

FB = ILB*sin(theta)

Question 8

Properties of 2 current-carrying wires

Answer 8

Same current direction, attract

Different current direction, repel

Question 9

Equation for flux

Answer 9

Φ=BA

Question 10

Equation for emf

Answer 10

ℰ=ΔΦ/t

ℰ=BLv

Question 11

Induced Currents

Answer 11

ℰ=IR

P = ℰI

Question 12

Lenz’s Law

Answer 12

• poles of magnet moving into a loop are switches
• magnet reverses direction
• magnet leaves field as opposed to entering it

current direction reverses