Question

Activity 13.6
B
A
Take a rectangular cardboard having two holes.
Insert a circular coil having large number of turns
through them, normal to the plane of the cardboard.
Connect the ends of the coil in series with a battery,
a key and a rheostat, as shown in Fig. 13.9.
Sprinkle iron filings uniformly on the cardboard.
Plug the key.
Tap the cardboard gently a few times. Note the
pattern of the iron filings that emerges on the
cardboard.
what is the conclusion of this activity

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Answer 1

Answer:

an electric field is generated due to flow of current which will make the iron fillings to allign themselves as I drew there.

pattern, iron fillings will form circular loops around the coils (or holes)

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