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Answers
Answer:
Given:
Several turns of copper wire (coil) near a magnet. The coil is moved towards the N pole of bar-magnet.
To find:
- Direction of induced current
- Name of the concerned law
- Alternations in current if number of loops made twice.
- Alternations in current when coil is made to move 3 times faster.
Calculation and Concept:
1. As per Faraday's Law of Electromagnetic Induction, the direction of induced current will be corresponding to the Pole of the magnet towards which the coil ia being moved.
So, N pole will be created on the coil near the magnet.
Hence , a anti-clockwise current will be induced.
2. The concerned Law is
Faraday's Law of Electromagnetic Induction.
The mathematical Statement is
ε = ∆φ/∆t
3. If the coil is made twice, the current induced will be twice because the change in magnetic flux becomes twice.
4. If the coil is made to move thrice, the change in magnetic flux becomes thrice and hence Induced current becomes thrice.
Answer:
1. Induced current will be as per Michael Faraday's Induction rule. The direction of current will be Anti-clockwise. The pole induced is North Pole.
2. The law is Faraday's Induction Law.
3. If the number of coils is made twice, the induced current also becomes twice. As flux change doubles.
4. Due to tripling of Flux change of magnetic line, we get tripling of induced current.