Advertisements
Advertisements
प्रश्न
State two ways to increase the force on a current-carrying conductor in a magnetic field.
Advertisements
उत्तर
The force on a current-carrying conductor in a magnetic field can be increased by increasing the flow of current in the conductor and also by increasing externally applied magnetic field.
APPEARS IN
संबंधित प्रश्न
Observe the following figure:
If the current in the coil A is changed, will some current be induced in the coil B? Explain.
Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.
Draw the magnetic lines of force due to a circular wire carrying current.
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
The diagram given below represents magnetic field caused by a current-carrying conductor which is:
(a) a long straight wire
(b) a circular coil
(c) a solenoid
(d) a short straight wire
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
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°
In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil
Is the current flowing clockwise or anticlockwise around the coil when viewed from above?
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?
State the unit of magnetic field in terms of the force experienced by a current carrying conductor placed in a magnetic field
Name the following diagram and explain the concept behind it.
i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine
Name and state the rule of determine the direction of force experienced by a current carrying straight conductor placed in a uniform magnetic field which is perpendicular to it.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
A current-carrying conductor is held in an exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor:
The shape of the magnetic field lines produced by a current-carrying conductor is ____________.
Describe the activity that shows that a current-carrying conductor experiences a force perpendicular to its length and the external magnetic field. How does Fleming’s left-hand rule help us to find the direction of the force acting on the current carrying conductor?
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
An alpha particle enters a uniform magnetic field as shown. The direction of force experienced by the alpha particle is ______.
