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# Two Coils a and B of Insulated Wire Are Kept Close to Each Other. Coil a is Connected to a Galvanometer While Coil B is Connected to a Battery Through a Key. What Would Happen If: the Current is Stopped by Removing the Plug from the Key? Explain Your Answer Mentioning the Name of the Phenomenon Involved. - CBSE Class 10 - Science

ConceptMagnetic Field Due to a Current carrying Straight Conductor

#### Question

Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if:

the current is stopped by removing the plug from the key?

#### Solution

In this case, galvanometer pointer moves to other side. This shows that the direction of induced current is reversed and then quickly returned to zero.
This phenomenon is based on the principle of electromagnetic induction.

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#### APPEARS IN

Lakhmir Singh Solution for Physics for Class 10 (2019 Exam) (2018 to Current)
Chapter 2: Magnetic Effects of Electric Current
Q: 41.2 | Page no. 105

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Solution Two Coils a and B of Insulated Wire Are Kept Close to Each Other. Coil a is Connected to a Galvanometer While Coil B is Connected to a Battery Through a Key. What Would Happen If: the Current is Stopped by Removing the Plug from the Key? Explain Your Answer Mentioning the Name of the Phenomenon Involved. Concept: Magnetic Field Due to a Current carrying Straight Conductor.
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