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प्रश्न
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
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उत्तर
a circular coil
The diagram represents a magnetic field caused by a current-carrying conductor which is a circular coil.
APPEARS IN
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.
State the rule to determine the direction of a force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
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?
Describe how you will locate a current-carrying wire concealed in a wall.
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
A current-carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should passed in the conductor:
(a) from top towards bottom
(b) from left towards right
(c) from bottom towards top
(d) from right towards left
What is the force on a current-carrying wire that is parallel to a magnetic field? Give reason for your answer.
force experienced by a current-carrying straight conductor placed in a magnetic field which is perpendicular to it.
Two coils A and B of insulated wire are kept close to each other. Coil A is connected to a galvanometer while coil B is connected to a battery through a key. What would happen if:
the current is stopped by removing the plug from the key?
Explain your answer mentioning the name of the phenomenon involved.
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.
Name and state the law which is used to determine the direction of force on a current carrying conductor placed in a magnetic field.
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?
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?
Differentiate between conductors and insulators.
State whether a magnetic field is associated or not around a static charge.
Write Fleming’s left hand rule.
The north pole of Earth’s magnet is in the ____________.
A copper wire is held between the poles of a magnet
The current in the wire can be reversed. The pole of the magnet can also be changed over. In how many of the four directions shown can the force act on the wire?
Two LED bulbs of 10W and 5W are connected in series. If the current flowing through 5W bulb is 0.005A, the current flowing through 10W bulb is ______.
