Induced emf depends upon
Correct answer: D. All of these
- A. V
- B. B
- C. L
- D. All of these
Explanation
Faraday's law of electromagnetic induction states that the magnitude of the induced electromotive force (EMF) in a conductor is directly proportional to the rate of change of magnetic flux through the conductor.The magnetic flux (Φ) is given by:Φ = B * A * cos(θ)where:B is the magnetic field strengthA is the area of the loopθ is the angle between the magnetic field and the normal to the loopTherefore, the induced EMF depends on:Magnetic Field Strength (B): A stronger magnetic field will induce a larger EMF.Area of the Loop (A): A larger loop area will experience a greater change in magnetic flux for a given change in magnetic field, resulting in a larger induced EMF.Rate of Change of Magnetic Flux: The faster the magnetic flux changes, the greater the induced EMF. This change in flux can be due to changes in B, A, or θ.
Last updated
About Electromagnetism
Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
Practise Electromagnetism
1,176 free Electromagnetism MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 Tesla is equal to:
1 tesla is equal to:
2.5π µF capacitor and 3000-ohm resistance are joined in series to an AC source of 200 volts and frequency. The power factor of the circuit and the power dissipated in it will respectively be:
A 10 cm long solenoid has 100 turns. What will be the magnetic field inside it along its axis if one-microampere current is passed through it?
A 100-turn coil of area 0.1 m2 rotates at half a revolution per second. It is placed in a uniform magnetic field of 0.01 T perpendicular to the axis of rotation of the coil. Calculate the maximum voltage generated in the coil?