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Magnetic Field and Field Lines

The magnetic ...

Question

The magnetic field lines around a straight current carrying conductor are in form of concentric circles.

A

True

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B

False

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Solution

The correct option is A True

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Q. The magnetic field lines around a straight current carrying conductor are in form of concentric circles.

State the form of magnetic field lines around a straight current-carrying conductor.

Q. concentric circles, centre, opposite, polarity, straight conductor, reversed, same, circular conductor.

Fill in the blanks in the following passage(s) from the words given above.

The magnetic field produced around a straight current carrying conductor is in the form of ________ with the ________ lying on the straight conductor. Take a copper wire AB. Pass it through a cardboard. Connect the wire to a battery through a key. Sprinkle some iron filings on the cardboard. Switch on the key and tap the cardboard gently. You will find that the iron filings arrange themselves in the form of concentric circles. Reverse the direction of current by changing the ________ of the battery. You will find that this time too, the iron filings arrange themselves in concentric circle but in _________ direction. Hence, the magnetic field lines of force around a ________ carrying electric current are concentric circles with the conductor at the centre. The direction of magnetic field changes if the direction of current is _________.

Q. Straight current carrying conductors produce magnetic fields around them.

Q. Which of the statement given below correctly describes the magnetic field near a long, straight current carrying conductor?
a. The magnetic lines of force are in a plane, perpendicular to the conductor in the form of straight lines.
b. The magnetic lines of force are parallel to the conductor on all the sides of conductor.
c. The magnetic lines of force are perpendicular to the conductor going radially outword.
d. The magnetic lines of force are in concentric circles with the wire as the center, in a plane perpendicular to the conductor.

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