Advertisements
Advertisements
प्रश्न
A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in Figure below:
The force on the wire due to the magnet is directed:
fron N to S
from S to N
vertically downwards
vertically upwards
Advertisements
उत्तर
vertically downwards
Using Fleming's left-hand rule, we find that the force on wire should act vertically downwards.
APPEARS IN
संबंधित प्रश्न
The magnetic field in a given region is uniform. Draw a diagram to represent it.
Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
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.
State qualitatively the effect of inserting an iron core into a current-carrying solenoid.
Name any two factors on which the strength of magnetic field produced by a current-carrying solenoid depends. How does it depend on these factors?
What is a solenoid? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.
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°
Which way does the wire in the diagram below tend to move?
Differentiate between conductors and insulators.
The following diagram shows two parallel straight conductors carrying the same current. Copy the diagram and draw the pattern of the magnetic field lines around them showing their directions. What is the magnitude of the magnetic field at a point 'X' which is equidistant from the conductors? Give justification for your answer.
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.
The strength of magnetic field around a current-carrying conductor is ____________.
Which of the following factors affect the strength of force experience by current-carrying conduct in a uniform magnetic field?
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is
A simple motor is made in a school laboratory. A coil of wire is mounted on an axle between the poles of a horseshoe magnet, as illustrated.
In the example above, coil ABCD is horizontal and the battery is connected as shown.
- For this position, state the direction of the force on the arm AB.
- Why does the current in the arm BC not contribute to the turning force on the coil?
What do you know about Michael Faraday?
Assertion (A): A current carrying straight conductor experiences a force when placed perpendicular to the direction of magnetic field.
Reason (R): The net charge on a current carrying conductor is always zero.
