Advertisements
Advertisements
प्रश्न
How does a magnetic field set up by a solenoid change when cross-sectional area of solenoid is increased?
Advertisements
उत्तर
By having a solenoid of large diameter or more cross-sectional area, the intensity of magnetic field increases.
APPEARS IN
संबंधित प्रश्न
Suppose you are given a long bar magnet and you are asked to break it into four small magnets. Draw diagrams showing the polarities of each broken part.
You are given an iron nail, a torch cell, and a long piece of insulated copper wire. With the help of a labelled neat diagram, describe in steps how you will make the nail, an electromagnet.
Name two factors on which the strength of magnetic field of an electromagnet depends and state how does it depend on the factors stated by you.
Name the material of core in (a) an electric bell, (b) electromagnet, (c) a d.c. motor, (d) an a.c. generator and (e) a transformer.
What is an electromagnet?
Describe a simple Experiment to demonstrate that there Exists a magnetic field around a current-carrying conductor.
How does a magnetic field set up by a solenoid change when number of turns are increased?
How does a magnetic field set up by a solenoid change when strength of current in the solenoid is decreased?
State important properties (or characteristics) of magnetic lines of force around a straight conductor.
State the function of a split ring in D.C. motor.
