- The value of current
- The weight of the conductor
- The direction of the conductor
- None of the above
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Electron current is flowing through a conductor in a direction you might describe as straight into this page. What is the direction of the resulting magnetic field?
Answer: Option 2 Let'
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Hall effect is observed in a specimen when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is?
Answer: Option 1 Let'
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Hall effect is observed in a specimen (metal or semi conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is?
Answer: Option 1 Let'
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A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be?
Answer: Option 1 Let'
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Water hammer is caused, when water flowing in a pipe is suddenly brought to rest by closing the valve. The extent of pressure thus produced due to water hammer depends on the?
Answer: Option 4 Let'
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Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer : Statements : Wind is an inexhaustible source of energy and an aerogenerator can convert it into electricity. Though not much has been done in this field, the survey shows that there is vast potential for developing wind as alternative source of energy. Conclusions : I. Energy by wind is comparatively newly emerging field. II. The energy crisis can be dealt by exploring more in the field of aero-generation.?
Answer: Option 5 The phrase 'not much has been done in this field' indicates that wind energy is a comparatively newly emerging field. So, I follows. The expression 'there is...
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How does the magnetic compass needle behave in a magnetic field?
Answer: Option 3 Let'
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A certain amount of current flows through a ring shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?
Answer: Option 2 Let'
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While comparing magnetic and electric circuits, the flux of magnetic circuit is compared with which parameter of electrical circuit?
Answer: Option 2 Let'
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The value of exciting or magnetizing current depends upon which of the following factors ?
Answer: Option 4 Let'
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