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प्रश्न
For a current in a long straight solenoid N- and S-poles are created at the two ends. Among the following statements, the incorrect statement is
विकल्प
The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid
The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at all points inside the solenoid
The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet
The N- and S-poles exchange position when the direction of current through the solenoid is reversed
उत्तर
The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet
Explanation -
Option (a), (b) and (d) are correct. Only option (c) is incorrect because the pattern of magnetic fields due to solenoid and bar magnet is almost the same.
APPEARS IN
संबंधित प्रश्न
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 type of core should be put inside a current-carrying solenoid to make an electromagnet?
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
What happens when a current-carrying conductor is placed in a magnetic field?
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.
Name one device whose working depends on the force exerted on a current-carrying coil placed in a magnetic field.
State Fleming's left-hand rule. Explain it with the help of labelled diagrams.
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:
a current is passed through coil B by plugging the key?
Explain your answer mentioning the name of the phenomenon involved.
A flat coil ABCD is freely suspended between the pole pieces of a U-shaped permanent magnet with the plane of coil parallel to the magnetic field.
When will the couple acting on the coil be
- maximum
- minimum?
State under what conditions force acting on a current carrying conductor which is freely suspended in a magnetic field can be Zero.
