Week 10 Induction Flashcards
1
Q
briefly describe mutual inductance
A
a changing current in one loop produces a changing magnetic flux through a second loop, hence, inducing a current in the second loop
2
Q
what is the flux mutual inductance equation
A
φ = M I
M is the mutual inductance
3
Q
what is inductance measured in
A
Henrys
4
Q
what does a transformer do
A
changes voltage
5
Q
what is the transformer equation
A
φ1/φ2 = N1/N2
6
Q
what is the EMF inductance equation
A
ε = -L dI/dt
7
Q
what is the work done to raise current equation
A
W = ∫LI dI = 1/2 LI^2
8
Q
what is the solenoid energy density equation
A
UD = B^2 / 2μ
