In series LCR circuit, the phase difference between applied voltage and current is
Positive when XL > XC
positive when XC > XL
90o
0o
What is the dimensions of a magnetic field B in terms of C ( = coulomb ), M, L, T?
[ M1 L-1 T-2 C ]
[ M1 L0 T-1 C-1 ]
[ M1 L0 T-2 C ]
[ M1 L0 T-1 C ]
Energy stored in between the plates of parallel plate capacitor of area A, separated by distance d is
ε0 E2 Ad
ε0 E2
ε0
Which of the following subsances magnetic susceptibility χm is negative?
Diamagnetic
Paramagnetic
Ferromagnetic
antiferromagnetic
A.
Diamagnetic
Magnetic susceptibility (χ) is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field.
In terms of the susceptibility χ, a material is diamagnetic if χ is negative, paramagnetic if χ is positive and small, and ferromagnetic if χ is large and positive.
When orientation. of dipoles parallel and antiparallel to magnetic field is distributed unequally, then the material is
paramagnetic
ferromagnetic
ferrimagnetic
antiferromagnetic