The right hand rule for determining the direction of the induced EMF was introduced by
A. Faraday
B. Lenz
C. Fleming
D. Maxwell
Show Answer
Answer: C
Share your understanding of this question with the correct explanation.
The right-hand rule for determining the direction of the induced electromotive force (EMF) was introduced by John Ambrose Fleming. Therefore, the correct answer is C: “Fleming.”
Here’s a further explanation:
The right-hand rule is a mnemonic device used in electromagnetism to determine the direction of various vector quantities, including the induced EMF. It is commonly used to determine the direction of the induced current or the direction of the magnetic field resulting from the induced EMF.
John Ambrose Fleming, a British scientist and engineer, introduced the right-hand rule in the late 19th century. He developed the rule as a convenient way to determine the direction of the induced current in a conductor based on the relative orientation of the magnetic field and the conductor.
The right-hand rule for determining the direction of the induced EMF involves the following steps:
- Extend the thumb, forefinger, and middle finger of your right hand perpendicular to each other.
- Align the thumb in the direction of the motion or change that is causing the magnetic field to change.
- Point the forefinger in the direction of the magnetic field.
- The middle finger then represents the direction of the induced EMF or the current flow.
By using this rule, one can determine the relative orientations and directions of the magnetic field, motion or change, and the induced EMF.
While Michael Faraday and Heinrich Lenz made significant contributions to the understanding of electromagnetic induction, the specific right-hand rule for determining the direction of the induced EMF is credited to John Ambrose Fleming.
Therefore, the correct answer is C: “Fleming.”