Question
The basic magnetization curve for a ferromagnetic material is shown in figure. Then, the value of relative permeability is highest for the point

Answer

(b)$B = {\mu _0}{\mu _r}H \Rightarrow {\mu _r} \propto \frac{B}{H}$= slope of $B- H $ curve
According to the given graph, slope of the graph is highest point $Q.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

In a meter bridge experiment $\mathrm{S}$ is a standard resistance. $\mathrm{R}$ is a resistance wire. It is found that balancing length is $l=25 \;\mathrm{cm} .$ If $\mathrm{R}$ is replaced by a wire of half length and half diameter that of $\mathrm{R}$ of same material, then the balancing distance $\left.l^{\prime} \text { (in } \mathrm{cm}\right)$ will now be
An engine is moving with uniform speed along a circular track emitting a sound of frequency $400\, Hz$ as shown in the figure. Speed of engine is $30\, m/sec$ and speed of sound is $330\, m/sec$. An observer is standing inside the track. Maximum frequency observed by the observer is
A coil of $N = 100$ turns carries a current $I = 5 \,A$ and creates a magnetic flux $\phi = {10^{ - 5}}\,T{m^{ - 2}}$ per turn. The value of its inductance $L$ will be......$mH$
Two waves each of amplitude $a$ and frequency $f$ have a phase difference $\frac{\pi}{2}$. The amplitude and frequency of resultant wave due to their superposition will be
The engine of a jet aircraft applies a thrust force of ${10^5}\,N$ during take off and causes the plane to attain a velocity of $1$ km/sec in $10$ sec. The mass of the plane is
The momentum $p$ (in $kg m / s )$ of a particle is varying with time $t$ (in $s )$ as $p=2+3 t^2$. The force acting on the particle at $t=3 s$ will be ......... $N$
A magnetic needle suspended parallel to a magnetic field requires $\sqrt 3\,J $ of work to turn it through $60^o$. The torque needed to maintain the needle in this position will be
A thin rod of length$f/3$ lies along the axis of a concave mirror of focal length $f.$ One end of its magnified image touches an end of the rod. The magnification of the image is
The minimum energy required to remove an electron is called
A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same height at the same time on a inclined plane. Both roll down without slipping. Which one will reach the bottom first?