Advertisements
Advertisements
Question
In the simple electric motor of figure given below, the coil rotates anticlockwise as seen by the eye from the position X when current flows in the coil
Is the current flowing clockwise or anticlockwise around the coil when viewed from above?
Advertisements
Solution
The current is flowing in clockwise direction around the coil when viewed from above.
Using Fleming's left-hand rule, the direction of current can be found.
APPEARS IN
RELATED QUESTIONS
State Fleming’s left-hand rule.
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?
State the form of magnetic field lines around a straight current-carrying conductor.
State whether the following statement is true or false:
The magnetic field inside a long circular coil carrying current well be parallel straight lines.
What is the shape of a current-carrying conductor whose magnetic field pattern resembles that of a bar magnet?
Fill in the following blank with suitable words:
For a current-carrying solenoid, the magnetic field is like that of a ...........
The magnetic field lines in the middle of the current-carrying solenoid are?
(a) circles
(b) spirals
(c) parallel to the axis of the tube
(d) perpendicular to the axis of the tube
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.
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?
A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Figure.
- In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil?
- Why is a commutator necessary for continuous rotation of the coil?
- Complete the diagram with commutator, etc. for the flow of current in the coil?
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?
When current is parallel to a magnetic field, then force experience by the current-carrying conductor placed in a uniform magnetic field is ____________.
What do you know about Michael Faraday?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
