Embibe Experts Solutions for Chapter: Magnetism And Magnetic Effects Of Electric Current, Exercise 1: Tamilnadu Board-2018

A circular coil of $200$ turns and of radius $20 \mathrm{cm}$ carries a current of $5\mathrm{A}$. Calculate the magnetic induction at a point along its axis, at a distance three times the radius of the coil from its centre.Use the value of ${\mathrm{\mu }}_0=4\mathrm{\pi }\times {10}^{-7}$.

Deduce an expression for the force on a current carrying conductor placed in a magnetic field.

Describe the principle, construction and working of a single phase A.C. generator.

A beam of protons and $\mathrm{\alpha }-$Particles are successively accelerated in a cyclotron. The ration of the normal magnetic field to be applied to the cyclotron so that protons and $\mathrm{\alpha }-$Particles have the same period of rotation is:

Phosphor-bronze wire is used for suspension in a moving coil galvanometer, because it has:

Write the special features of Magnetic Lorentz force.

Explain length contraction.

Obtain an expression for the magnetic induction at a point due to an infinitely long straight conductor carrying current.