Advertisements
Advertisements
प्रश्न
Can a transformer work when it is connected to a D.C. source? Give a reason.
उत्तर
No, a transformer cannot work on a d.c. source. With a d.c. source, there will be no change in magnetic flux linked with the secondary coil.
APPEARS IN
संबंधित प्रश्न
When an electric current is passed through any wire, a magnetic field is produced around it. Then why an electric iron connecting cable does not attract nearby iron objects when electric current switched on through it?
What do you understand by the term "electromagnetic induction"? Explain with the help of a diagram.
In which of the following case does the electromagnetic induction occur?
A loop of wire is held near a magnet.
Consider the energy density in a solenoid at its centre and that near its ends. Which of the two is greater?
A square coil of side 30 cm with 500 turns is kept in a uniform magnetic field of 0.4 T. The plane of the coil is inclined at an angle of 30° to the field. Calculate the magnetic flux through the coil.
What should be the core of an electromagnet?
Sea turtles return to their birth beach many decades after they were born due to ______.
A current I = 10 sin(100π t) A is passed in first coil, which induces a maximum e.m.f of 5π volt in second coil. The mutual inductance between the coils is ______.