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प्रश्न
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उत्तर
(i) Fleming's left hand rule is used to find out the direction of Lorentz force on a conductor. (ii) Fleming's right hand rule is used to find out the direction of induced current in a conductor.
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संबंधित प्रश्न
State Fleming’s left-hand rule.
What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
Describe how you will locate a current-carrying wire concealed in a wall.
A current-carrying straight wire is held in exactly vertical position. If the current passes through this wire in the vertically upward direction, what is the direction of magnetic field produced by it? Name the rule used to find the direction of magnetic field.
What happens when a current-carrying conductor is placed in a magnetic field?
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.
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
State two ways to increase the speed of rotation of a D.C. motor.
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
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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.
