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प्रश्न
Draw the magnetic lines of force due to a circular wire carrying current.
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उत्तर
When current passes through a circular wire, magnetic field is produced around it. The magnetic field lines are circular near the wire. At the centre, these lines are straight.
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संबंधित प्रश्न
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.
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
Observe the following figure:
If the current in the coil A is changed, will some current be induced in the coil B? Explain.
What are the various ways in which the strength of magnetic field produced by a current-carrying circular coil can be increased?
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid:
(a) will decrease
(b) will increase
(c) will become zero
(d) will remain the same
When is the force experienced by a current-carrying conductor placed in a magnetic field largest?
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.
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.
State two ways to increase the force on a current-carrying conductor in a magnetic field.
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?
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.
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 static charge.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be maximum.
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
The shape of the magnetic field lines produced by 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?
If the strength of the current flowing through a wire is increased, the strength of the magnetic field produced by it ______.
