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Bar Magnet

What is the n...

Question

What is the necessity to Tap the iron fillings when they are sprinkled on the cardboard

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Solution

Iron filings near the bar magnet are tapped when they are sprinkled on the cardboard so that they align themselves along the field lines.

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Q. Electric current is passed through a straight conductor passing through the center of a piece of cardboard .Some iron fillings are sprinkled on the cardboard and tapped.The iron fillings around the conductor

Q. Electric current is passed through a straight conductor passing through the centre of a piece of cupboard. Some iron filings are sprinkled on the cardboard and tapped. How will the iron filings spread out around the conductor ?

Q. Consider the following statements:
Statement 1: When iron fillings are sprinkled on a magnet, they align themselves as shown

Statement 2: Magnetic field of the magnet, apply force on each filing which aligns them as shown.

Q. Iron does burn on heating but iron fillings burns vigorously when sprinkled in the flame of the burner.
Why does iron fillings burns but iron does not burn on heating?

Iron does not burn on heating but iron fillings burn vigorously when sprinkled in the flame of the burner . Why? Give reason.

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