Due to an induced electromotive force, current passes through a coil. The amount of thiscurrent depends on the
Correct answer: A. Magnetic flux.
- A. Magnetic flux.
- B. Area of the coil.
- C. Shape of the coil.
- D. Resistance of the coil.
Explanation
The correct answer is 'magnetic flux.' According to Faraday's Law of Electromagnetic Induction, the induced electromotive force (EMF) in a coil is proportional to the rate of change of magnetic flux through the coil. This EMF drives the current through the coil. While the area of the coil can influence the total magnetic flux, the question specifically asks about the amount of current, which is directly related to the change in magnetic flux. The shape of the coil and its resistance are not primary factors in determining the induced current; they play more secondary roles in the overall electrical characteristics of the coil.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Magnetic Flux
Magnetic flux measures the magnetic field passing through a surface, calculated for a uniform field as Φ = BA cos θ, where θ is the angle between the field and the surface normal. Questions involve area, field strength and orientation, the weber as its unit, and the distinction between flux and magnetic field.
Practise Electromagnetism
1,176 free Electromagnetism 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.