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प्रश्न
In which of the following case does the electromagnetic induction occur?
A loop of wire is held near a magnet.
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उत्तर
No.
संबंधित प्रश्न
State three differences between direct current and alternating current.
When a wire is moved up and down in a magnetic field, a current is induced in the wire. What is this phenomenon known as?
Name and state the law which determines the direction of induced current.
or
State Fleming’s right-hand rule.
Welders wear special goggles or face masks with glass windows to protect their eyes from electromagnetic radiations. Name the radiations and write the range of their frequency.
A conducting square loop of side l and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A uniform and constant magnetic field Bexists along the perpendicular to the plane of the loop as shown in figure. The current induced in the loop is _____________ .
Figure shows a wire sliding on two parallel, conducting rails placed at a separation l. A magnetic field B exists in a direction perpendicular to the plane of the rails. What force is necessary to keep the wire moving at a constant velocity v?
Fleming's left hand rule : electric current : : Fleming's right hand rule : _______
State Lenz’s law.
When an electric current is passed through a wire or a coil, a magnetic field is produced. Is the reverse phenomenon possible i.e, can a magnetic field produce an electric current? Explain with the help of an appropriate example.
