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प्रश्न
Select the correct option:
A bar magnet is rubbed on a bar of steel along its length 20 times. The bar of steel gets magnetised due to the process of:
पर्याय
induction
conduction
friction
none of the these
उत्तर
conduction
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संबंधित प्रश्न
What is a lodestone?
Explain the mechanism of attraction of iron nails by a magnet when brought near them.
Complete the following diagram of magnets to show the lines of force.
Complete the following diagram of magnets to show the lines of force.
Distinguish between
Magnetic properties of iron and steel.
The direction of the magnetic lines around a current-carrying conductor can be easily understood using the ______ rule.
When the conductor is perpendicular to the magnetic field, the force will be the ______, When it is parallel to the magnetic field, the force will be ______.
A student fixes a white sheet of paper on a drawing board. He places a bar magnet in the centre and sprinkles some iron filings uniformly around the bar magnet. Then he taps gently and observes that iron filings arrange themselves in a certain pattern.
- Why do iron filings arrange themselves in a particular pattern?
- Which physical quantity is indicated by the pattern of field lines around the bar magnet?
- State any two properties of magnetic field lines.
Name the poles P, Q, Rand S of the magnets in the following figures 'a' and 'b':
 |
 |
| Figure 'a' | Figure 'b' |
Assertion (A): Magnetic field lines never intersect each other.
Reason (R): If they intersect, then at the point of intersection, the compass needle would point towards two directions, which is not possible.
