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Electricity and Magnetism
1. What is the refractive index of glass if the light of wavelength 546 nm is plane
polarized when reflected at an angle of 60° ?
polarized when reflected at an angle of 60° ?
Electricity and Magnetism
A piece of wire of cross-sectional area A and resistivity ρ is bent into a circular loop of radius r and placed in a magnetic field with its plane at right angles to the field. Determine the magnitude of the current in the loop if the field is reduced to zero in time t.
Electricity and Magnetism
A charge q is moving slowly with a uniform velocity . Obtain an expression for the vector potential and the magnetic field at a distance r from it.
Electricity and Magnetism
Calculate the value of induced emf between the ends of an axle of a railway carriage
1.75 m long traveling on level ground with a uniform velocity of 50 km per hour. The
vertical component of Earth’s magnetic field (Br) is given to be 5 105T.
1.75 m long traveling on level ground with a uniform velocity of 50 km per hour. The
vertical component of Earth’s magnetic field (Br) is given to be 5 105T.
Electricity and Magnetism
Q#03. a) Is it possible to polarize sound waves? Why and why not? b) In the following figure, which path is allowed and possible. Explain why. c) Given the data in the figure, determine the wavelength of light CLO-
Electricity and Magnetism
If a circuit has 50 Hz frequency and its peak value is 20V. Calculate the sinusoidal voltage. Also calculate the time for one cycle and draw the corresponding voltage versus time graph.
Electricity and Magnetism
Write don the four maxwell's equations in a region of space with charge density d and current density J and discuss qualitatively what each equation describing
Electricity and Magnetism
A vehicle travelling at a constant speed of 60 km/hr rounds a curve of radius 100 m. Find its acceleration?
A. 1.777 m/s2
B. 2.777 m/s2
C. 3.777 m/s2
D. 4.777 m/s2
E. 5. 777 m/s2
Kindly, tell me what should be its answer and why, please.
Thank you.
A. 1.777 m/s2
B. 2.777 m/s2
C. 3.777 m/s2
D. 4.777 m/s2
E. 5. 777 m/s2
Kindly, tell me what should be its answer and why, please.
Thank you.
Electricity and Magnetism
An aluminium disc of radius r rotated about its centre at a constant speed. It is placed in a uniform magnetic field perpendicular to its surface. A steady electromotive force (e.m.f.) E is generated between the centre O nd the rim at P.
What is the e.m.f. generated between points Q and R, each a distance r/2 from the centre?
A. Zero
B. E/4
C. E/2
D. E
It's answer is given "A. Zero" in the book.
Kindly explain why the answer must be zero, please.
Thank you.
What is the e.m.f. generated between points Q and R, each a distance r/2 from the centre?
A. Zero
B. E/4
C. E/2
D. E
It's answer is given "A. Zero" in the book.
Kindly explain why the answer must be zero, please.
Thank you.
Electricity and Magnetism
A charged conducting sphere of radius R is embedded in a material that
is infinite in extent and has a permittivity of apsolon E. The external electric field
is uniform and has a magnitude of Eo. The sphere has a net charge of q.
Find the electric field (a) inside and (b) outside the sphere.
is infinite in extent and has a permittivity of apsolon E. The external electric field
is uniform and has a magnitude of Eo. The sphere has a net charge of q.
Find the electric field (a) inside and (b) outside the sphere.
