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
When orientation. of dipoles parallel and antiparallel to magnetic field is distributed unequally, then the material is
paramagnetic
ferromagnetic
ferrimagnetic
antiferromagnetic
Lenz law is consistent with conservation of
Energy
Mass
Charge
Momentum
A.
Energy
Lenz law is in accordance with the law of conservatin of energy. See induced emf produces a current that opposes the change in flux, because a change in flux means a change in energy. Energy can enter or leave.