Home
Class 12
PHYSICS
Mutual inductance of two coils can be in...

Mutual inductance of two coils can be increased by

A

decreasing the number of turns on the coils

B

increasing the number of turns on the coils

C

winding the coils on the wooden core

D

none of these.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding how to increase the mutual inductance of two coils, we will analyze each option provided and determine the correct answer based on the principles of electromagnetic induction. ### Step-by-Step Solution: 1. **Understanding Mutual Inductance**: - Mutual inductance (M) is a measure of the ability of one coil to induce an electromotive force (EMF) in another coil due to a change in current. It is influenced by several factors including the number of turns in the coils, the area of the coils, the distance between them, and the medium in which they are placed. 2. **Analyzing the Options**: - **Option 1: Decreasing the number of turns**: - This option suggests reducing the number of turns in the coils. Since mutual inductance is directly proportional to the number of turns (N), decreasing the number of turns will lead to a decrease in mutual inductance. Therefore, this option is incorrect. - **Option 2: Increasing the number of turns**: - This option suggests increasing the number of turns in the coils. Since mutual inductance is directly proportional to the number of turns, increasing the number of turns will indeed increase the mutual inductance. Therefore, this option is correct. - **Option 3: Winding the coils on a wooden core**: - This option suggests using a wooden core for the coils. Wood is an insulator and does not support magnetic flux as effectively as a ferromagnetic material. Therefore, using a wooden core would not enhance the mutual inductance and could potentially decrease it. Thus, this option is incorrect. 3. **Conclusion**: - The only correct method to increase the mutual inductance of two coils is to **increase the number of turns** in the coils. ### Final Answer: The mutual inductance of two coils can be increased by **increasing the number of turns** in the coils. ---
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Fill in the blanks)|7 Videos

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Short Answer Questions)|36 Videos

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Very Short Answer Questions Carrying I mark)|44 Videos

  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos

  • ELECTROMAGNETIC WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

Mutual inductance of two coils depends on their self inductance L_(1) and L_(2) as :

Assertion Mutual inductance of two coils depends on the distance between the coils and their orientation. Reason It does not depend on the magnetic material filled between the coils.

If a change in current of 0.01 A in one coil produces change in magnetic flux of 1.2xx10^(-2)Wb in the other coil, then the mutual inductance of the two coils in henries

Coefficient of mutual inductance of two coil is numerically …………………linked with one coil when …………….flows through………………….

How does the mutual inductance of a pair of coils change when (i) distance between the coils is increased and (ii) number of turns in the coils is increased?

Coefficient of mutual inductance for two coils is 1 H. Current in one of the coils is increased from 4 to 5 A in 1 ms. What average emf will be induced in the other coil?

Statement-1 : When we cousider mutual induction of two coils, their self induction is taken as zero. Statement-2 : This is because mutual induction of two coils is over and above self induction of each coil.