Advertisements
Advertisements
Question
Name the following diagram and explain the concept behind it.
Advertisements
Solution
Name: Fleming’s left-hand rule
Concept: It represents Fleming’s left-hand rule used for finding the direction of the magnetic force when a current-carrying conductor is placed in a magnetic field.
According to this rule, the left-hand thumb, index finger, and middle finger are stretched so as to be perpendicular to each other. If the index finger is in the direction of the magnetic field and the middle finger points in the direction of the current, then the direction of the thumb is the direction of the force on the conductor.
APPEARS IN
RELATED QUESTIONS
Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise. Apply the right-hand rule to find out the direction of the magnetic field inside and outside the loop.
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 property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
Which of the following correctly describes the magnetic field near a long straight wire?
State whether the following statement is true or false
The field at the centre of a long circular coil carrying current will be parallel straight lines.
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.
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.
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.
Describe how you will locate a current-carrying wire concealed in a wall.
Name and state the rule to determine the direction of magnetic field around a straight current-carrying conductor.
What is the shape of field lines inside a current-carrying solenoid? What does the pattern of field lines inside a current-carrying solenoid indicate?
List three ways in which the magnetic field strength of a current-carrying solenoid can be increased?
What type of core should be put inside a current-carrying solenoid to make an electromagnet?
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?
Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of magnetic field is:
45°
60°
90°
180°
A current flows in a wire running between the S and N poles of a magnet lying horizontally as shown in Figure below:
The force on the wire due to the magnet is directed:
fron N to S
from S to N
vertically downwards
vertically upwards
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
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?
force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
State condition when magnitude of force on a current carrying conductor placed in a magnetic field is zero?
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
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.
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.
State whether a magnetic field is associated or not around a moving charge.
The strength of magnetic field around a current-carrying conductor is ____________.
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?
Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':
Which of the following pattern correctly describes the magnetic field around a long straight wire carrying current?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
