The ability to produce an electromotive force by changing the magnetic field inside a coil is used to generate.
Correct answer: B. electricity
- A. mechanical energy
- B. electricity
- C. electromagnetic force
- D. magnetic energy only
Explanation
The ability to produce an electromotive force (EMF) by changing the magnetic field inside a coil is the principle behind electromagnetic induction, which is used to generate electricity. This is the basis for many electric generators, including power plants, dynamos, and transformers.When the magnetic field inside a coil changes, an electric current is induced in the coil. This is known as electromagnetic induction. The changing magnetic field can be achieved by:- Moving a magnet near the coil- Rotating the coil within a magnetic field- Changing the current in a nearby coil
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 15 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?