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R G PUBLICATION-CURRENT ELECTRICITY-EXERCISE
- Give the relation between emf and P.D.
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- Why a meter bridge is used?
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- Give the unit of electromotive force.
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- What is the unit of current density?
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- In which principle Kirchhoff's junction rule is based on?
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- Define conductivity.
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- What are semiconductors? How electrical conductivity of semiconductors...
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- What are the factors on which resistance of a conductor depends?
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- What is super conductivity.
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- State the principle of working of a potentiometer.
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- What is the principle of a meter bridge.
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- Kirchhoff's first law obeys laws of conservation of charge, how?
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- When a Wheatstone Bridge will be balanced?
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- What is ohmic and non ohmic conductor?
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- How drift velocity related with random velocity?
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- What is one ampere current?
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- Write an expression for the ratio of resistance in balanced Wheatstone...
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- What is meant by free electron of a conductor?
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- What is the difference between electric current and electric current d...
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- What is a shunt? What is its use?
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