JEE Main 2023 — Electromagnetic Induction Question with Solution
From: JEE Main 2023 (Online) 31st January Morning Shift
Question
Spherical insulating ball and a spherical metallic ball of same size and mass are dropped from the same height. Choose the correct statement out of the following
{Assume negligible air friction}
Choose an option
Show full solutionCorrect option: C
Correct answer
CInsulating ball will reach the earth's surface earlier than the metal ball
Step-by-step explanation
The correct answer is option C: the insulating ball will reach the earth's surface earlier than the metal ball.
When the two balls are dropped from the same height, they will experience the same gravitational force, which will cause them to accelerate downwards. However, According to Faraday’s law of electromagnetic induction motion of metal is opposed by earth magnetic field. Which will slightly reduce its acceleration.
On the other hand, the insulating ball will not experience any electromagnetic induction. Therefore, it will accelerate downwards at a slightly faster rate than the metal ball. As a result, the insulating ball will reach the earth's surface earlier than the metal ball.
So, option C is the correct statement.
When the two balls are dropped from the same height, they will experience the same gravitational force, which will cause them to accelerate downwards. However, According to Faraday’s law of electromagnetic induction motion of metal is opposed by earth magnetic field. Which will slightly reduce its acceleration.
On the other hand, the insulating ball will not experience any electromagnetic induction. Therefore, it will accelerate downwards at a slightly faster rate than the metal ball. As a result, the insulating ball will reach the earth's surface earlier than the metal ball.
So, option C is the correct statement.
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This is a previous-year question from JEE Main 2023, covering the Electromagnetic Induction chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.