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प्रश्न
Draw the magnetic lines of force due to a circular wire carrying current.
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उत्तर
When current passes through a circular wire, magnetic field is produced around it. The magnetic field lines are circular near the wire. At the centre, these lines are straight.
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संबंधित प्रश्न
The magnetic field in a given region is uniform. Draw a diagram to represent it.
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.
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
Draw a sketch to show the magnetic lines of force due to a current-carrying straight conductor.
What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
What happens when a current-carrying conductor is placed in a magnetic field?
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
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.
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?
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 whether a magnetic field is associated or not around a moving charge.
The shape of the magnetic field lines produced by a current-carrying conductor is ____________.
The strength of magnetic field around 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 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?
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The graph (fig A) illustrates the correlation between the number of protons (x-axis) and the number of neutrons (y-axis) for elements A, B, C, D, and E in the periodic table. These elements are denoted by the letters rather than their conventional symbols. When the element C, depicted in the graph, undergoes radioactive decay, it releases radioactive rays. When these rays are directed into the plane of the paper in the presence of a magnetic field, as indicated in the fig B, they experience deflection, causing them to move upwards.
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Name the law used to identify the radioactive radiation emitted by the element.
