The phenomena of electromagnetic induction is:
(a) the process of charging a body.
(b) the process of generating magnetic field due to a current passing
through a coil.
(c) producing induced current in a coil due to relative motion between a
magnet and the coil.
(d) the process of rotating a coil of an electric motor.
The phenomena of electromagnetic induction is:
(a) the process of charging a body.
(b) the process of generating magnetic field due to a current passing through a coil.
(c) producing induced current in a coil due to relative motion between a magnet and the coil.
(d) the process of rotating a coil of an electric motor.
(a) the process of charging a body.
(b) the process of generating magnetic field due to a current passing through a coil.
(c) producing induced current in a coil due to relative motion between a magnet and the coil.
(d) the process of rotating a coil of an electric motor.
A
the process of charging a body
B
the process of generating magnetic field due to a current passing through a coil
C
producing induced current in a coil due to relative motion between a magnet and the coil
D
the process of rotating a coil of an electric motor
Text Solution
AI Generated Solution
The correct Answer is:
To solve the question regarding the phenomena of electromagnetic induction, we will analyze each option provided and determine which one correctly describes electromagnetic induction.
### Step-by-Step Solution:
1. **Understanding Electromagnetic Induction**:
- Electromagnetic induction refers to the process by which a changing magnetic field induces an electric current in a conductor. This is a fundamental principle of electromagnetism.
2. **Analyzing Each Option**:
- **Option (a)**: "The process of charging a body."
- This option does not describe electromagnetic induction. Charging a body typically refers to the process of adding or removing electrons, which is not related to the induction process.
- **Option (b)**: "The process of generating magnetic field due to a current passing through a coil."
- While this statement is true (a current does generate a magnetic field), it describes the generation of a magnetic field rather than the induction of current due to a changing magnetic field.
- **Option (c)**: "Producing induced current in a coil due to relative motion between a magnet and the coil."
- This option accurately describes electromagnetic induction. When a magnet moves relative to a coil (or vice versa), it changes the magnetic field around the coil, inducing an electric current.
- **Option (d)**: "The process of rotating a coil of an electric motor."
- This option describes a mechanical action in an electric motor, which is related to electromagnetic principles but does not define electromagnetic induction itself.
3. **Conclusion**:
- After analyzing all the options, we find that **Option (c)** is the correct answer. It correctly describes the phenomenon of electromagnetic induction as the process of producing induced current in a coil due to the relative motion between a magnet and the coil.
### Final Answer:
The correct answer is **(c) producing induced current in a coil due to relative motion between a magnet and the coil.**
---
Topper's Solved these Questions
Similar Questions
Explore conceptually related problems
Magnetic Field due to Circular Coil
Magnetic field due to 0.1 A current flowing through a circular coil of radius 0.1 m and 1000 turns at the centre of the coil is
The magnetic field at the centre of the current carrying coil is
Find the magnetic field induction at a point on the axis of a circular coil carrying current and hence find the magnetic field at the centre of circular coil carrying current.
The ratio of the magnetic field at the centre of a current carrying coil of the radius a and at distance 'a' from centre of the coil and perpendicular to the axis of coil is
What amount of heat will be generated in a coil of resistance R due to a charge q passing through it if the current in the coil decreases down to zero uniformly during a time interval t_(0) ?
What amount of heat will be generated in a coil resistance R due to a charge q passing through it if the current in the coil decreases down to zero uniformly during a time interval Deltat ?
Electromagnetic brakes work on the principle of electromagnetic induction. If a metallic disc or a coil is rotating in a uniform magnetic field, it will experience a torque due to induced currents set up in the disc. According to Lenz's law, induced current is in a direction so as to oppose the rotation. Hence a retarding torque is produced. The rotating wheel of a vehicle is connected to a coil placed in a uniform emf is used to charge a battery. Thus kinetic enery of wheel is stored as chemical energy. The drawback of electromagnetic brake is that induced current or retarding torque is directly proportional to speed of rotation. The speed, therefore, decays exponentially and vehicle will take a long time to stop. Thus, mechanical brakes are used simultaneously. The advantage of electromagnetic brakes is that
Electromagnetic brakes work on the principle of electromagnetic induction. If a metallic disc or a coil is rotating in a uniform magnetic field, it will experience a torque due to induced currents set up in the disc. According to Lenz's law, induced current is in a direction so as to oppose the rotation. Hence a retarding torque is produced. The rotating wheel of a vehicle is connected to a coil placed in a uniform emf is used to charge a battery. Thus kinetic enery of wheel is stored as chemical energy. The drawback of electromagnetic brake is that induced current or retarding torque is directly proportional to speed of rotation. The speed, therefore, decays exponentially and vehicle will take a long time to stop. Thus, mechanical brakes are used simultaneously. The main disadvantage of electromagnetic brakes is that
Electromagnetic brakes work on the principle of electromagnetic induction. If a metallic disc or a coil is rotating in a uniform magnetic field, it will experience a torque due to induced currents set up in the disc. According to Lenz's law, induced current is in a direction so as to oppose the rotation. Hence a retarding torque is produced. The rotating wheel of a vehicle is connected to a coil placed in a uniform emf is used to charge a battery. Thus kinetic enery of wheel is stored as chemical energy. The drawback of electromagnetic brake is that induced current or retarding torque is directly proportional to speed of rotation. The speed, therefore, decays exponentially and vehicle will take a long time to stop. Thus, mechanical brakes are used simultaneously. The working of electromagnetic brakes does not involve