Physics Flashcards
1
Q
If L is the distance between the geometrical
ends of a magnet, then the distance between the magnetic poles are
A
2l = 5L/6
2
Q
When N pole is towards north pole, null points at?
When S pole is towards north pole
A
Equatorial
Axial
3
Q
Constant of tangent galvanometer
A
K = 2rB/un
4
Q
Time period for magnetic?
A
T = 2pi root (I/MB)
5
Q
value of bohr magnetron
A
9.27 10^-24
6
Q
Relation between H and B
A
B = uH
7
Q
Intensity of magnetization?
A
M/V
8
Q
Magnetic susceptibility
A
X = I/H
9
Q
permeability and susceptibilty?
A
u = 1 + X
10
Q
Mean value of current over half cycle?
Rms value?
A
- 637
0. 70
11
Q
motional emf
A
Blv sintheta
12
Q
rod emf
A
1/2 Bl^2 omega
13
Q
Flux and L relation
A
flux = LI
14
Q
Self inductance?
A
L = un^2Al
15
Q
Magnetic ends of solenoid B value?
A
half the value of normal B
