Tell me why is n-type conductor is neutral?

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What is thermistor used for?

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Explain what is time?

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Why is mercury used in thermometers rather than water?

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Define Self-Luminous body ?

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Two bulbs, one of 600W and the other of 100W having same voltage rating are connected in series across the supply in a room.Which bulb will glow brighter? If one of the bulb is switched off, what will be effect on illumination?

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Similar charges repel while dissimilar ones attract each other. How does two electrons attract each other during the formation of bond or why don't the protons in the nucleus repel?

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Explain about Magnetic mines

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How does barometer forecast the weather ?

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What is the law of machines?

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Explain the characteristics of dead stars?

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Why are the tides produced in the sea ?

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