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Step by step text solution for What is the current electricity? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 11 exams.
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CHETANA PUBLICATION-ELECTRIC CURRENT THROUGH CONDUCTORS-EXERCISE
- What is the current electricity?
01:20
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- What happens when a potential difference is applied across the ends ...
03:10
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- Define electric current. State its S.I. unit and dimension
02:03
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- Give the sign convention of electric current.
02:03
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- A current 4A flows through an automobile headlight. How many electrons...
02:29
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- Explain the concept of drift speed occupied by the electrons in a cond...
02:56
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- Define current density. State its formula and units.
01:29
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- Prove that the current density of a metallic conductor is directly pro...
04:58
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- A metallic wire of diameter 0.02m contains 1028 free electrons per cub...
03:16
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- The magnitude of current density in a copper wire is 500 A//cm^2. If t...
03:31
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- A copper wire of radius 0.6 mm carries a current of 1A. Assuming the c...
02:04
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- State Ohm's law.
02:29
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- Explain the resistance of a conductor. State its unit and dimension.
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- Define S.I. unit of resistance.
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- Draw VI. curve of a conductor.
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- Define conductance. State its unit and dimension
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- Derive the relation between electric field and current density.
04:06
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- Show that σ = \(\frac{ne^2\tau}{m}\). Where symbols have usual meaning...
03:46
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- A Flashlight usestwo 1.5V batteries to provide a steady current of 0.5...
02:13
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- DC current flows in a metal piece of non-uniform cross-section. Which ...
06:02
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