Advertisements
Advertisements
Question
Describe how you will locate a current-carrying wire concealed in a wall.
Advertisements
Solution
We know that a current-carrying wire produces magnetic field. Therefore, we can locate a current-carrying wire concealed in a wall by detecting the magnetic field produced by the wire. It is done with the help of a compass.
APPEARS IN
RELATED QUESTIONS
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
State Fleming’s left hand rule.
State the form of magnetic field lines around a straight current-carrying conductor.
What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
Name the type of magnet with which the magnetic field pattern of a current-carrying solenoid resembles
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.
A current-carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should passed in the conductor:
(a) from top towards bottom
(b) from left towards right
(c) from bottom towards top
(d) from right towards left
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
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
Differentiate between conductors and insulators.
State whether a magnetic field is associated or not around a moving charge.
The diagram below shows a free conductor AB is kept in a magnetic field and is carrying current from A to B. (To avoid confusion complete path of the circuit is not shown) The direction of the force experienced by the conductor will be:
What does the direction of thumb indicate in the right-hand thumb rule. In what way this rule is different from Fleming’s left-hand rule?
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.
|
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.
|
Name the law used to identify the radioactive radiation emitted by the element.
