Advertisements
Advertisements
प्रश्न
State important properties (or characteristics) of magnetic lines of force around a straight conductor.
Advertisements
उत्तर
The main properties are:
(i) The magnetic lines of force are in the form of concentric circles around the conductor but as their distance from the conductor increases, the curvature of lines of force decreases.
(ii) The direction of the magnetic lines of force reverses if the direction of the flow of current in the conductor reverses.
(iii) With the increase of current in the conductor, the number of lines of force or the intensity of the magnetic field also increases.
APPEARS IN
संबंधित प्रश्न
State two ways of magnetising an iron piece?
Name and state the rule by which polarity at the ends of a current carrying solenoid is determined.
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.
principle of an electric motor ?
State the factors that can increase the speed of rotation of the coil in a D.C. motor.
State the principle of a D. C. motor.
What is dynomo (a.c. generator)? State the principle on which it works.
Point out three differences between an electromagnet and a bar (or permanent) magnet.
State the function of a split ring in D.C. motor.
How does a magnetic field set up by a solenoid change when cross-sectional area of solenoid is increased?
