A choke coil should have
Show Hint
A choke coil is an inductance coil with very small resistance. The primary function is to control current in AC circuit. In electronics. Higher frequencies are blocked while passing direct current.
- high resistance and low inductance
- high resistance and high inductance
- low resistance and high inductance
- low resistance and low inductance
The Correct Option is C
Solution and Explanation
A choke coil should have high inductance and low resistance. This is done to reduce the current in an A.C. circuit. The high inductance is used in place of a high resistance because the inductance does not consume power, and thus no energy is lost as heat.
Also Read: Electromagnetic Induction
Top Questions on Electromagnetic induction
- The magnetic flux linked with a closed coil (in Wb) varies with time \( t \) (in s) as \( \phi = 5t^2 + 4t - 2 \). If the resistance of the circuit is 14 \( \Omega \), the magnitude of induced current in the coil at \( t = 1 \) s will be:
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic induction
- The electric field in space between the plates of a parallel plate capacitor (each of area \( 2.5 \times 10^{-3} \, \text{m}^2 \)) is changing at the rate of \( 4 \times 10^6 \, \text{Vm}^{-1}\text{s}^{-1} \). The displacement current between the plates of the capacitor is :
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic induction
- When current in a coil changes at a steady rate from 8 A to 6 A in 4 ms, an emf of 1.5 V is induced in it. The value of self-inductance of the coil is :
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic induction
- State Lenz’s law and explain how this law is a consequence of conservation of energy principle.
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic induction
- What will be the directions of induced current when the loop enters the field and when it leaves the field?
- CBSE CLASS XII - 2025
- Physics
- Electromagnetic induction
Questions Asked in AIIMS exam
- Which of the following is a globular protein?
- AIIMS - 2024
- Biomolecules
What is the major product of the reaction?- AIIMS - 2024
- Organic Chemistry - Some Basic Principles and Techniques
- Which of the following is a crystalline solid?
- AIIMS - 2024
- The solid state
- 1028 grams of seawater sample contains 7 mL of dissolved oxygen ($ \text{O}_2 $). What is the concentration of oxygen in parts per million (ppm)?
- AIIMS - 2024
- Environmental Chemistry
- Which non-metallic solid is known for its electrical conductivity?
- AIIMS - 2024
- Ionic mobility and conductivity
Concepts Used:
Electromagnetic Induction
Electromagnetic Induction is a current produced by the voltage production due to a changing magnetic field. This happens in one of the two conditions:-
- When we place the conductor in a changing magnetic field.
- When the conductor constantly moves in a stationary field.
Formula:
The electromagnetic induction is mathematically represented as:-
e=N × d∅.dt
Where
- e = induced voltage
- N = number of turns in the coil
- Φ = Magnetic flux (This is the amount of magnetic field present on the surface)
- t = time
Applications of Electromagnetic Induction
- Electromagnetic induction in AC generator
- Electrical Transformers
- Magnetic Flow Meter