Define the term induced electric current.
Define the term induced electric current.
Induced electric current is the current produced in a conductor when it is placed in a region where the magnetic field (magnetic flux) changes over time.
Marking Scheme
- 1Definition mentioning changing magnetic field/flux: 0.5 mark
- 2Mentioning the production of current in a conductor: 0.5 mark
Hint
Think about what happens when you move a magnet quickly in and out of a coil of wire.
Quick Oral Answer
Induced current is the current generated in a loop of wire when the magnetic field passing through that loop changes.
Analysis & Explanation
Induced current is the fundamental principle behind electric generators. Unlike a battery-powered circuit where chemical energy creates a potential difference, here, mechanical motion or a changing magnetic environment creates the current. The direction of this induced current can be determined using Fleming's Right-Hand Rule.
Common Mistakes
- 1Forgetting to mention that the magnetic field must be *changing*.
- 2Confusing induced current with regular direct current from a cell.
Interesting Facts
Michael Faraday discovered electromagnetic induction in 1831, which eventually led to the development of the modern power grid.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2020?
This question carries 1 mark in the CBSE Class 10 Science 2020 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Electromagnetic Induction" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2020 paper?
This is a Very Short Answer question from Section A in the CBSE Class 10 Science 2020 paper.