Advertisements
Advertisements
प्रश्न
A coil has a self-inductance of 0·05 Henry. Find the magnitude of the emf induced in it when the current flowing through it is changing at the rate of 100 As-1.
Advertisements
उत्तर
L = 0.05H
`("dI")/"dt" = 100`AS-1
`|"E"| = "L"("dI")/"dt" = 5/100 xx 100`
= 5V
∴ Magnitude of induced emf is 5V.
APPEARS IN
संबंधित प्रश्न
What condition is necessary for the production of current by electromagnetic induction?
When current is 'switched on' and 'switched off' in a coil, a current is induced in another coil kept near it. What is this phenomenon known as?
In which of the following case does the electromagnetic induction occur?
A magnet is moved through a loop of wire .
Can a transformer work when it is connected to a D.C. source? Give a reason.
Draw a simple labeled diagram of a step-up transformer.
Establish the fact that the relative motion between the coil and the magnet induces an emf in the coil of a closed circuit.
The condition for the praenomen of electromagnetic induction is that there must be a relative motion between ____________.
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.
Consider the situation where the Magnet goes in and out of the coil. State two changes which could be made to increase the deflection in the galvanometer.
If the sun radiates energy at the rate of 3.6 × 1033 ergs/sec the rate at which the sun is loosing mass is given by ______.
Induced current flows through a coil ______.
