Advertisements
Advertisements
प्रश्न
Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.
Advertisements
उत्तर
The magnetic field lines due to a current-carrying straight conductor are concentric circles whose centres lie on the wire.
APPEARS IN
संबंधित प्रश्न
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
State whether the following statement is true or false
The field at the centre of a long circular coil carrying current will be parallel straight lines.
Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.
State the form of magnetic field lines around a straight current-carrying conductor.
State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.
State and explain the Clock face rule for determining the polarities of a circular wire carrying current.
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles
The magnetic field associated with a current-carrying straight conductor is in anticlockwise direction. If the conductor was held along the east-west direction, what will be the direction of current through it? Name and state the rule applied to determine the direction of current?
In a statement of Fleming's left-hand rule, what do the following represent?
(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.
For Fleming's left-hand rule, write down the three things that are 90° to each other, and next to each one write down the finger or thumb that represents it.
The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:
45°
60°
90°
180°
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
A flat coil ABCD is freely suspended between the pole of U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
What happens when a current is passed in the coil?
State two ways to increase the speed of rotation of a D.C. motor.
State Fleming’s left-hand rule.
A flat coil ABCD is freely suspended between the pole pieces of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will the couple acting on the coil be
- maximum
- minimum?
State whether a magnetic field is associated or not around a static charge.
State whether a magnetic field is associated or not around a moving charge.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
