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CBSE Class 12-science Answered

What is the significance of negative sign in the expression of emf begin mathsize 12px style straight epsilon equals negative dϕ over dt end style where the symbols have their usual meaning.
Asked by Topperlearning User | 06 Jul, 2015, 04:46: PM
Expert Answer

The negative sign signifies that the induced emf always opposes any change in the magnetic flux.

Answered by | 06 Jul, 2015, 06:46: PM
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