The area under a velocity-time graph represents which of the following physical quantities?
A. Force
B. Momentum
C. Displacement
D. Acceleration
Answer: Option C
Solution (By JKSSB Mock Tests)
The area under the curve of a velocity-time graph represents the total displacement covered by an object in a given time interval. Since velocity = displacement/time, the product of velocity and time (the area) yields displacement. The slope of a velocity-time graph, conversely, represents acceleration.
Explanation:
A transformer operates on the principle of mutual induction. It consists of primary and secondary coils. When an alternating current flows through the primary coil, it generates a changing magnetic field. This fluctuating flux links with the secondary coil, inducing an alternating electromotive force (EMF) in it according to Faraday's Law.
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