Question:
Two inductors \( L_1 \) and \( L_2 \) are connected such that their fluxes are in opposite directions. The total inductance \( L \) will be:
Two inductors \( L_1 \) and \( L_2 \) are connected such that their fluxes are in opposite directions. The total inductance \( L \) will be:
Show Hint
If inductors aid each other, use \( +2M \). If they oppose each other, use \( -2M \).
Updated On: Mar 26, 2025
- \( L = L_1 + L_2 + M \)
- \( L = L_1 + L_2 + 2M \)
- \( L = L_1 + L_2 - 2M \)
- \( L = L_1 + L_2 - M \)
Hide Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
When two inductors are connected in series but their fluxes oppose each other, the total inductance is:
\[
L = L_1 + L_2 - 2M
\]
where \( M \) is the mutual inductance.
Was this answer helpful?
0
0
Top Questions on Inductance
- If an inductor coil of self-inductance 2H stores 25J of magnetic energy, then the current passing through it is:
- KEAM - 2025
- Physics
- Inductance
- An e.m.f of 5 volts is produced by a self-inductance when the current changes at a steady rate from 3A to 2A in 1 millisecond. The value of self-inductance is:
- MHT CET - 2024
- Physics
- Inductance
- If \( L \) is the inductance and \( R \) is the resistance, then the unit of \( \frac{L}{R} \) is:
- MHT CET - 2024
- Physics
- Inductance
- In a coil, the current changes from \( -2 \, \text{A} \) to \( +2 \, \text{A} \) in \( 0.2 \, \text{s} \) and induces an emf of \( 0.1 \, \text{V} \). The self-inductance of the coil is:
- MHT CET - 2024
- Physics
- Inductance
- Two coils are placed close to each other. The mutual inductance of the pair of coils depends upon:
- MHT CET - 2024
- Physics
- Inductance
View More Questions
Questions Asked in BHU PET exam
- Which of the following is an optically active substance?
- BHU PET - 2019
- Wave optics
- The radius of the first zone in a zone plate of focal length 40 cm for light of wavelength 4000 Å is:
- BHU PET - 2019
- Wave optics
- If a particle is fixed on a rotating frame of reference, the fictitious force acting on the particle will be:
- BHU PET - 2019
- Rotational motion
- The acceleration of a frame of reference, fixed on the earth’s surface at the equator and rotating with the earth, once a day will be:
- BHU PET - 2019
- Rotational motion
- At \( 4^\circ C \) for water, \( C_P = C_V \) because:
- BHU PET - 2019
- Thermodynamics
View More Questions