Ampere's law give us the relationship between:
Correct answer: D. Current and magnetic field
- A. Force and velocity of charge
- B. Force and magnetic field
- C. Current and force
- D. Current and magnetic field
Explanation
Ampere's law is a fundamental law in electromagnetism that relates the circulation of the magnetic field around a closed loop to the current passing through the loop. It states that the line integral of the magnetic field (B) around a closed loop is equal to the product of the current (I) passing through the loop and a constant called the permeability of free space (μ₀). This law establishes a relationship between the current (I) and the magnetic field (B) produced by that current.
Last updated
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.
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
A 25 wattand 100 watt bulbs are joined in series and connected to the mains.Which bulb will glow brighter?
A 50 mH coil carries a current of 2A. The energy stored in its magnetic field is:
A.C generator is a device which converts:
A.C is converted into D.C by:
A coil has an inductance of 0.02 Henry. When a current in the coil is changing at the rate of 150 A/S then the induced emf will be: