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प्रश्न
Write the two names in the following diagram.
Fleming’s right hand rule.
Label the following diagram.
Fleming’s right-hand rule.
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उत्तर
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संबंधित प्रश्न
State three differences between direct current and alternating current.
A metal rod `1/sqrtpi `m long rotates about one of its ends perpendicular to a plane whose magnetic induction is 4 x 10-3 T. Calculate the number of revolutions made by the rod per second if the e.m.f. induced between the ends of the rod is 16 mV.
State three ways in which the strength of an electromagnet can be increased.
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The north-south polarities of an electromagnet can be found easily by using:
(a) Fleming's right-hand rule
(b) Fleming's left-hand rule
(c) Clock face rule
(d) Left-hand thumb rule
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Can a transformer work when it is connected to a D.C. source? Give a reason.
The following diagram shows a fixed coil of several turns connected to a center zero galvanometer G and a magnet NS which can move in the direction shown in the diagram.
- Describe the observation in the galvanometer if
- The magnet is moved rapidly,
- The magnet is kept still after it has moved into the coil
- The magnet is then rapidly pulled out the coil.
- How would the observation in (i) of part (a) change if a more powerful magnet is used?
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State Fleming’s Right Hand Rule.
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Draw a labelled diagram to make an electromagnet from a soft iron bar. Mark the polarity at its ends in your diagram. What precaution would you observe while making it?
Observe the given figure of Fleming’s Right Hand Rule and write the labels of A and B correctly.
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Sea turtles return to their birth beach many decades after they were born due to ______.
The working of a dynamo is based on the principle of
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How were electricity and magnetism considered for a long time?
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What did Faraday show in 1831?
What is a coil?
