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BETTER CHOICE PUBLICATION-ELECTRIC CURRENT, RESISTANCE AND E.M.F.-MOST EXPECTED QUESTIONS
- Why are copper wires used as connecting wires?
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- Define SI unit of resistance.
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- What do you mean by critical velocity?
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- What do you mean by relaxation time ?
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- What is the SI unit of temperature ?
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- Define the term mobility of charge carriers in a conductor. Write its ...
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- What do you mean by semiconductors?
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- What is a thermistor? Write its three applications.
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- What is the effect of rise in temperature on the conductivity of coppe...
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- When do we connect the resistances in series and parallel ?
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- Define resistivity of a material and discuss the factors on which it d...
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- What is electric fuse?Why is its important?
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- Give the cause of random motion of electrons in a conductor.
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- Is internal resistance a defect in the cell?
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- Write three applications of a thermistor.
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