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BINA LIBRARY-CURRENT ELECTRICITY-EXERCISE
- One low resistance is connected in parallel to a high resistance. Show...
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- What is a potentiometer? Why is it most accurate device in measuring e...
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- Define rest and motion
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- What is Ohm's law? Describe.
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- Give an example of circular motion.
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- What is meant by rectilinear motion? Give two examples.
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- Why heat energy is produced, when electric current passes through a re...
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- Obtain an expression for the heat produced in a wire, when a current I...
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- Write two differences between electromotive force and potential differ...
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- Give two example of periodic motion.
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- What is the principle of a meter bridge.
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- State the principle of working of a potentiometer.
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- If the length of a wire is doubled and cross-sectional area is halved,...
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- Two ends of a conducting wire of non-uniform cross-section are connect...
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- The magnitude of drift velocity of free electrons in a conductor is ve...
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- Why are the car lights dimmed when the starter is operated?
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- Why is it easier to start a car engine on a warm day than on a chilly ...
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- What is rolling friction ?
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- When is Wheatstone bridge most sensitive ?
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- Why do we prefer a potentiometer with longer wire?
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