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An alternating voltage V(t) = 220 sin 100 ฯt volt is applied to a purely resistive load of 50 ohm. The time taken for the current to rise from half of the peak value to the peak value is:
(1) 5 ms. 2) 3.3 ms 3) 7.2 ms 4) 2.2 ms
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What is the difference between elastic and inelastic collisions?
In elastic collisions, both momentum and kinetic energy are conserved. Examples include collisions between hard billiard balls. In inelastic collisions, only momentum is conserved while some kinetic energy is converted to other forms like heat or sound. Most real-world collisions are inelastic to some degree.
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Electromagnetic induction is the process of generating an electromotive force (EMF) in a conductor by changing the magnetic field through it. According to Faradays Law, the induced EMF is proportional to the rate of change of magnetic flux. This principle is the basis for generators, transformers, and inductors, which are essential components in electrical power systems.









