Advertisements
Advertisements
Question
The diagram given below represents magnetic field caused by a current-carrying conductor which is:
(a) a long straight wire
(b) a circular coil
(c) a solenoid
(d) a short straight wire
Advertisements
Solution
a circular coil
The diagram represents a magnetic field caused by a current-carrying conductor which is a circular coil.
APPEARS IN
RELATED QUESTIONS
The magnetic field in a given region is uniform. Draw a diagram to represent it.
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.
State the form of magnetic field lines around a straight current-carrying conductor.
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.
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:
45°
60°
90°
180°
Which way does the wire in the diagram below tend to move?
Name three factors on which the magnitude of force on a current carrying conductor placed in a magnetic field depends and state how does the force depend on the factors stated by you.
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is maximum?
A flat coil ABCD is freely suspended between the pole of U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
What happens when a current is passed in the coil?
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
State two ways to increase the speed of rotation of a D.C. motor.
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 Fleming’s left-hand rule.
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?
State whether a magnetic field is associated or not around a static charge.
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?
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.
