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.

Advertisements
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
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 Fleming’s left hand rule.
Observe the following figure:

If the current in the coil A is changed, will some current be induced in the coil B? Explain.
State the form of magnetic field lines around a straight current-carrying conductor.
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
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?
The magnetic field associated with a current-carrying straight conductor is in anticlockwise direction. If the conductor was held along the east-west direction, what will be the direction of current through it? Name and state the rule applied to determine the direction of current?
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 zero?
A flat coil ABCD is freely suspended between the pole of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will coil come to rest?
