Advertisements
Advertisements
प्रश्न
Why is it that the magnetic field of a current-carrying coil having n turns, is ‘n’ times as large as that produced by a single turn (loop)?
Advertisements
उत्तर
The magnetic field produced by a single wire loop will have a definite direction and strength. If we increase the number of loops the magnetic field due to each loop will add. The magnetic field is directly proportional to the current in the wire loop, with each loop the current increases and so the magnetic field increases. Moreover, it will increase the density of magnetic field lines and so the magnetic field strength. Therefore, the magnetic field of a current-carrying coil having n turns is ‘n’ times as large as produced by a single loop.
APPEARS IN
संबंधित प्रश्न
The back face of a circular loop of wire is found to be south magnetic pole. The direction of current in this face of the circular loop of wire will be:
(a) towards south
(b) clockwise
(c) anticlockwise
(d) towards north
Draw a labelled diagram showing the three magnetic field lines of a loop carrying current. Mark the direction of current and the direction of magnetic field by arrows in your diagram.
What is the direction of magnetic field at the centre of a coil carrying current in clockwise ?
What is the direction of magnetic field at the centre of a coil carrying current in the anticlockwise direction?
State and illustrate the rule used for finding the polarity of the faces of a circular coil.
An induced emf is produced when a magnet is moved into a coil. The magnitude of induced emf does not depend on ____________.
If two circular coils can be arranged in any of the three situations as shown in the diagrams below, then their mutual induction will be:
Meena draws magnetic field lines of field close to the axis of a current carrying circular loop. As she moves away from the centre of the circular loop she observes that the lines keep on diverging.
How will you explain her observation.
Why does a magnetic compass needle pointing North and South in the absence of a nearby magnet get deflected when a bar magnet or a current carrying loop is brought near it. Describe some salient features of magnetic lines of field concept.
The correct pattern of magnetic field lines of the field produced by a current carrying circular loop is:
