The magnetic field inside a long solenoid is:
Correct answer: B. Uniform
- A. Varying with radial distance
- B. Uniform
- C. Zero
- D. Not enough Information
Explanation
The magnetic field inside a long straight solenoid-carrying current is the same at all points. It is because the magnetic field in the solenoid is constant because the lines are completely parallel to each other.As shown in figure, the magnetic field lines inside a long solenoid are straight lines, which represents uniform magnetic field.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Electromagnetic Induction
Changing magnetic flux induces an emf according to Faraday's law, while Lenz's law gives the direction that opposes the change producing it. Transformers apply induction between coils to step alternating voltage up or down, with turns ratio, current transformation and energy losses determining practical operation.
Practise Electromagnetic Induction
288 free Electromagnetic Induction MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electromagnetic Induction questions
An electron is moving along the axis of a solenoid carrying a current. Which of the following is a correct statement about the electromagnetic force acting on the electron?
A force which is experienced in a magnetic field depends on:
Weber ampere per meter is equal to:
In an AC generator, AC reverses its direction _ times per second.
There is a current of 25 A in a long straight wire. What is the flux density at a point 3 cm from the wire?
An electron (charge = -1.6 x 10^-19C) is moving at 3 x 10^5 m/s in the positive x direction. A magnetic field of 0.8 T is in the positive z-direction. The magnetic force on the electron is: