Advertisements
Advertisements
Question
A copper conductor is placed over two stretched copper wires whose ends ate connected to a D.C. supply as shown in the diagram.
- What should be the magnetic poles at the points A and B lying on either side of the conductor to experience the force in the upward direction?
- Name the law used to find these polarities.
Solution
- A - North pole
B - South pole - The Fleming's left hand rule is the law that was applied to ascertain the polarities.
APPEARS IN
RELATED QUESTIONS
The magnetic field in a given region is uniform. Draw a diagram to represent it.
The magnetic field inside a long straight solenoid-carrying current ______.
Which of the following correctly describes the magnetic field near a long straight wire?
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.
A horizontal wire carries a current as shown in Figure below between magnetic poles N and S:
Is the direction of the force on the wire due to the magnet:
(a) in the direction the current
(b) vertically downwards
(c) opposite to the current direction
(d) vertically upwards
State whether a magnetic field is associated or not around a static charge.
The shape of the magnetic field lines produced by a current-carrying conductor is ____________.
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?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
