Embibe Experts Solutions for Chapter: Magnetic Effects of Current and Magnetism, Exercise 2: Level 2

Magnetic lines of force due to a bar magnet do not intersect, because

If a current is passed through a spring, then the spring will

A current $I$ flows along a wire frame having the shape shown total of six straight wires of length L each, soldered to form two perpendicular square shapes. The magnetic moment of this wire frame is $xI{L}^2.$ The value of $x\times \sqrt{2}$ is

On rotating the dip circle plane from true position by $60°$, the dip becomes ${\tan }^{-1}\left(2\right)$. Then the original dip at that place was $\frac{\mathrm{\pi }}{n}$. Find the value of $n$.

The coercivity of a magnet is $3\times {10}^{3}A{m}^{-1}$. What current (in $Amp$) should be passed through solenoid of length $10 cm$ and number of turns $50$ so that the magnet is demagnetised when inserted in it?

The temperature at which a ferromagnetic material becomes paramagnetic is called a

Permeability is defined as the ratio between

A solenoid has core of a material with relative permeability $501$ and its windings carry a current of $1 \mathrm{A}.$ The number of turns of the solenoid is $500 {\mathrm{m}}^{-1}$. The magnetisation of the material is