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Negative feedback principle:
The idea that in a system where there are self-propagating conditions, those new conditions tend to act against earlier existing circumstances. Such a principle is actually a restatement of a conservation law.
Example Lenz's law.
contruction
You are given 3 lenses l1,l2,l3 each of focal length 20 an object at 40cm in front of l1.the final real image is formed at focus i ofl3,find separation between l1,l2,l3 ? Ans) bet
contact ball whit wall box
define
A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in the accordance with ohm’s law.
What is hall Effect? Derive an expression for it.
The fundamental particles: Although other atomic particles are known, the three fundamental ones are: Protons. The proton has unit mass and carries a unit positive charge.
Places where friction occurs Locate the places on several mechanical devices where parts rub together. Roller skates, pulleys and the wheels of toys often required oil. Try to
Use Thévenin's theorem to find the current ?owing in the 14Ω resistor of the network shown in Figure. Find also the power dissipated in the 14Ω resistor.
experiment writeup to measure tan a position
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