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प्रश्न
State Fleming’s right-hand rule.
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उत्तर
- The Thumb, index finger, and middle finger of the right hand are stretched perpendicular to each other.
- The index finger indicates the direction of the magnetic field.
- Thumb indicates the direction of motion of the conductor.
- The middle finger indicates the direction of induced current.
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संबंधित प्रश्न
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- longer side,
- shorter side of the loop?
For how long does the induced voltage last in each case?
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() What is the name of the effect being produced by the moving magnet?
(2) State what happens to the reading shown on the galvanometer when the magnet is moving away from the coil.
(3) The original experiment is repeated. This time the magnet is moved towards the coil at a great speed. State two changes you would notice in the reading on the galvanometer.
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The diagram 10 shows two coils X and Y. The coil X is connected to a battery S and a key K. The coil Y is connected to a galvanometer G.
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(i)At the end of the coil X,
(ii)At the end C of the coil Y,
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(b) How can you reverse the direction of rotation of the armature?
(c) How can you increase the speed of rotation of the motor?
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A square coil of side 30 cm with 500 turns is kept in a uniform magnetic field of 0.4 T. The plane of the coil is inclined at an angle of 30° to the field. Calculate the magnetic flux through the coil.
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