NDA PHYSICS QUIZ - 22

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Question 1:

Which of the following is used for protecting the circuits due to short-circuiting or overloading of the circuits.

Question 2:

The direction of magnetic field around a current carrying metallic wire is given by- 

Question 3:

Fleming's right hand rule is used to find the direction of which of the following?

Question 4:

Strength of magnetic field is maximum at which part of a magnet?

Question 5:

A permanent magnet repels only -

Question 6:

A freely suspended magnet always aligns in which direction?

Question 7:

In the magnetic meridian of a certain place, the horizontal component of the earth's magnetic field is $0.26 \mathrm{G}$ and the dip angle is $60^{\circ}$. What is the magnetic field of the earth at this location?

Question 8:

How many poles are there in a magnet?

Question 9:

The magnetic field lines inside a current carrying long solenoid are in the  form of :- 

Question 10:

The magnetic needle has magnetic moment $6.7 \times 10^{-2} \mathrm{Am}^{2}$ and moment of inertia $g=7.5 \times 10^{-6} \mathrm{~kg} \mathrm{~m}^{2}$. It performs 10 complete oscillations in $6.70 \mathrm{~s}$. What is the magnitude of the magnetic field?