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प्रश्न
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संबंधित प्रश्न
The device used for producing electric current is called _________.
- What kind of energy change takes place when a magnet is moved towards a coil having a galvanometer at its ends?
- Name the phenomenon.
Draw a labelled diagram to show how an electromagnet is made.
What is an electromagnet? What do you know about the simplest form of an electromagnet?
A coil of 200 turns carries a current of 0.4 A. If the magnetic flux of 4 mWb is linked with each turn of the coil, find the inductance of the coil.
Ansari Sir was demonstrating an experiment in his class with the setup as shown in the figure below.
A magnet is attached to a spring. The magnet can go in and out of the stationary coil. He lifted the Magnet and released it to make it oscillate through the coil.
Based on your understanding of the phenomenon, answer the following question.
What is the principle which Ansari Sir is trying to demonstrate?
Induced current flows through a coil ______.
For making a strong electromagnet the material of the core should be ______.
A galvanometer is an instrument that can detect the presence of a current in a circuit.
Show that for a given positive ion species in a cyclotron, (i) the radius of their circular path inside a dee is directly proportional to their speed, and (ii) the maximum ion energy achievable is directly proportional to the square of the magnetic induction.
