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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.
Explain different ways to induce current in a coil.
The direction of current in the coil at one end of an electromagnet is clockwise. This end of the electromagnet will be:
(a) north pole
(b) east pole
(c) south pole
(d) west pole
The most suitable material for making the core of an electromagnet is:
(a) soft iron
(b) brass
(c) aluminium
(d) steel
Show diagrammatically how an alternating emf is generated by a loop of wire rotating in a magnetic field. Write the expression for the instantaneous value of the emf induced in the rotating loop.
Name the following diagram and explain the concept behind it.
State Lenz’s law.
Shown in the figure below is a metre bridge set up with null deflection in the galvanometer. The value of the unknown resistance R is ______
Name some equipment that uses electromagnetism for functioning.
