What happens to the flux if applied magnetic field is doubled on the same surface?
Correct answer: B. Becomes twice
- A. Becomes half
- B. Becomes twice
- C. Becomes infinite
- D. Becomes 4 times
Explanation
The magnetic flux through a closed loop is directly proportional to the magnetic field passing through the loop. Therefore, if the magnetic field doubles, the magnetic flux through the loop will also double, provided that the loop remains in the same position and orientation with respect to the magnetic field.The relationship between magnetic flux and the magnetic field is described by Faraday's law of electromagnetic induction, which states that the induced electromotive force (EMF) in a closed loop is proportional to the rate of change of magnetic flux passing through the loop
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?