Metallic (nonferromagnetic) and nonmetallic particles in a solid … - Vidyadip

Question

Metallic (nonferromagnetic) and nonmetallic particles in a solid waste may be separated as follows. The waste is allowed to slide down an incline over permanent magnets. The metallic particles slow down as compared to the norunetallic ones and hence are separated. Discuss the role of eddy currents in the process.

✓

Answer

As the metallic particle slide over permanent magnet they are attracted towards magnet due to formation of eddy current on the metallic body and thus they slow down and are separated from rest of material.

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

Explore more

More "2 Marks Questions" from Electromagnetic Induction→Electromagnetic Induction — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

What is electron emission ? Explain its types.

Draw the graph between the frequency of the incident light and the stopping potential in the experiment of photoelectric.

What is natural frequency of a system ? What is resonance? - Explain using a simple example.
###
What is resonance ? Explain using an appropriate example.

Two identical circular loops, P and Q. each of radius r and carrying currents are kept in the parallel planes having a common axis passing through O. The direction of current in P is clockwise and in Q is anti-clockwise as seen from O which is equidistant from the loops P and Q. Find the magnitude of the net magnetic field at O.

Equipotential surfaces are 5 cm apart from each other. How much work will be required to move a 500 µC charge between distant points?

Let I = current through a conductor, R = its resistance and V = potential difference across its ends. According to Ohm's law, product of two of these quantities equals the third. Obtain Ohm's law from dimensional analysis. Dimensional formulae for R and V are $\text{ML}^2\text{I}^{-2}\text{T}^{-3}$ and $\text{ML}^2\text{T}^{-3}\text{I}^{-1}$ respectively.

Write an expression for resistance and resistivity of a conductor in terms of number of free electrons per unit volume and relaxation time.

Explain the formation of potential barrier and depletion region in a p-n junction diode. What is effect of applying forward bias on the width of depletion region?

What is the resistance of an intrinsic semiconductor at 0K?

Under what condition, force on moving charged particle in a magnetic field will be (i) maximum (ii) minimum?