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प्रश्न
Write laws of Fleming right hand rule.
Write Fleming’s right-hand rule.
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उत्तर
Stretch the forefinger, the middle finger and the thumb of the right hand, such that they are mutually perpendicular to each other. If the forefinger indicates the direction of the magnetic field, the thumb indicates the direction of motion of the conductor, then the middle finger indicates the direction of the induced current in the conductor.
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संबंधित प्रश्न
State Faraday’s laws of electromagnetic induction.
State Lenz’s Law.
- How would you demonstrate that a momentary current can be obtained by the suitable use of a magnet, a coil of wire and a galvanometer?
- What is the source of energy associated with the current obtained in part (a)?
- Describe briefly one way producing an induced e.m.f?
- State one factor that determines the magnitude of induced e.m.f. in part (a) above.
- What factor determines the direction of induced e.m.f. in part (a) above?
Explain the principle, construction and working of a dc motor.
A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference.
A.C generator works on the principle of ____________.
Fleming’s left hand and Right hand rules are used in ____________.
The direction of the magnetic field around a straight conductor carrying current can be determined by ______.
Fleming’s left-hand rule is also known as the dynamo rule.
Two vectors `vec"A"` and `vec"B"` have equal magnitudes. If magnitude of `vec"A"` + `vec"B"` is equal to two times the magnitude of `vec"A"` - `vec"B"`, then the angle between `vec"A"` and `vec"B"` will be ______.
Name the principle of AC generator.
State two factors on which the magnitude of induced e.m.f. in a coil depend.
The magnetic flux through a coil perpendicular to its plane is varying according to the relation Φ = (5t3 + 4t2 + 2t − 5) Weber. If the resistant of the coil is 5 ohm, then the induced current through the coil at t = 2 sec will be ______.
What is the current produced in a coil by changing magnetic flux called?
If magnetic flux changes by \[\Delta\Phi_B\] in a time interval \[\Delta t\], which expression gives the induced emf \[e\]?
If magnetic flux is measured in weber and time in seconds, what is the unit of induced emf?
What changes when either a coil or a nearby magnet is moved so that their relative position changes?
What happens to magnetic flux through a coil when a magnet is brought closer to it?
When is an emf induced as a magnet moves towards or away from a coil?
What is the induced emf if both a magnet and a coil remain stationary?
Why must work be done to move a magnet towards or away from a coil when an induced current flows?
In Fleming’s Right-Hand Rule, which finger gives the direction of the induced current?
If the magnetic field across a loop decreases to zero, what is the final magnetic flux through the loop?
