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BINA LIBRARY-CURRENT ELECTRICITY-EXERCISE
- How can we change the speed and the direction of a moving body?
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- Define electric current. Is it scalar or vector?
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- What is the direction of flow of current?
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- What is needed to cause an electric current?
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- Define emf of a cell. What is its unit?
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- Is emf a scalar or a vector quantity?
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- Define electrical conductivity.
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- What quantity of a circuit affects the current?
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- What is meant by drift velocity of electrons ?
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- How does electric field vary with drift velocity?
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- What is the order of the drift velocity of electrons?
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- Why the drift of the positive ions is not considered?
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- What is Ohm's law? Describe.
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- Define the resistance of a conductor. What is its unit?
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- Define the specific resistance of the material of a conductor. What is...
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- What is conductance? What is its unit?
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- Define one ohm.
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- How does resistance of a metal vary with temperature?
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- What is super conductivity.
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- Give the dimensional representation of Resistance.
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- What is a shunt? What is its use?
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