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Magnetic Filed due to straight wire
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Magnetic poles that are unlike ________and magnetic poles that are alike ___________. A) run; stay B)attract; repel C)stay; repel D)repel; attract
attract; repel
What areas of a magnet have the strongest magnetic effect? A)the middle B) the poles C) the sides
the poles
Refer the diagram. A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is: Directed to the right Directed to the left
Directed to the left
A freely suspended bar magnet always rest in N-S direction True False
true
Which of the following correctly describes the magnetic field near a long straight wire? A)The field consists of radial lines originating from the wire. B)The field consists of concentric circles centred on the wire.
The field consists of concentric circles centred on the wire.
Magnetic field produced around a straight conductor due to current in it is given by A)Fleming's right hand rule B)Right hand thumb rule C)Clock rule D)Fleming's left hand rule
Right hand thumb rule
No two field-lines are found to cross each other. False True
True
The magnetic field lines are__________. A)curves B)closed loops c)lines
Closed loops
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