Advertisements
Advertisements
प्रश्न
State Fleming’s left-hand rule.
Advertisements
उत्तर
Fleming’s left hand rule states that if we arrange the thumb, the centre finger, and the forefinger of the left hand at right angles to each other, then the thumb points towards the direction of the magnetic force, the centre finger gives the direction of current, and the forefinger points in the direction of magnetic field.
APPEARS IN
संबंधित प्रश्न
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.)
Imagine that you are sitting in a chamber with your back to one wall. An electron beam, moving horizontally from back wall towards the front wall, is deflected by a strong magnetic field to your right side. What is the direction of magnetic field?
What concealed do you get from the observation that a current-carrying wire deflects a compass needle placed near it?
State qualitatively the effect of inserting an iron core into a current-carrying solenoid.
Name the rule for finding the direction of magnetic field produced by a straight current-carrying conductor.
Draw the magnetic lines of force due to a circular wire carrying current.
What is a solenoid? Draw a sketch to show the magnetic field pattern produced by a current-carrying solenoid.
The front face of a circular wire carrying current behaves like a north pole. The direction of current in this face of circular wire is:
(a) clockwise
(b) downwards
(c) anticlockwise
(d) upwards
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
In a statement of Fleming's left-hand rule, what do the following represent?
(a) direction of centre finger.
(b) direction of forefinger.
(c) direction of thumb.
A current-carrying conductor is placed perpendicularly in a magnetic field. Name the rule which can be used to find the direction of force acting on the conductor.
If the current in a wire is flowing in the vertically downward direction and a magnetic field is applied from west to east, what is the direction of force in the wire?
How will the direction of force be changed, if the current is reversed in the conductor placed in a magnetic field?
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.
Name an instrument which makes use of the principle stated above.
The following diagram shows two parallel straight conductors carrying the same current. Copy the diagram and draw the pattern of the magnetic field lines around them showing their directions. What is the magnitude of the magnetic field at a point 'X' which is equidistant from the conductors? Give justification for your answer.
When current is parallel to a magnetic field, then force experience by the current-carrying conductor placed in a uniform magnetic field is ____________.
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
