Question

explain an activity to show that magnetic force is a non​ contact force

Answer 1

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Procedure -Take a magnet and bring it near iron nails.

Observation - U will observe that the nails are attracted by the magnet. 

Result - It shows that magnetic force is non-contact force.

Precaution - Magnet is not touching the nails. 

Answer 2

Answer: Experiment to suggest that magnetic force is a non-contact force

Explanation:

Procedure -Take a magnet and bring it near iron nails.

Observation - You will observe that the nails are attracted by the magnet. 

Result/conclusion- It shows that magnetic force is non-contact force.

Precaution - Make sure that magnet is not touching the nails