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Science, Physics
9th -
11thgrade
Magnetic Effect of a Current
10 questions
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- 1. Multiple Choice
Who was the first to observe the magnetic effect of electric current?
Faraday
Oersted
Volta
Ampere
- 2. Multiple Choice
Magnetic field inside a long solenoid carrying current is
same at all points (uniform)
different at poles and at the centre
zero
different at all points
- 3. Multiple Choice
The magnetic field lines due to a straight wire carrying a current are
straight
circular
parabolic
elliptical
- 4. Multiple Choice
Which of the following correctly describes the magnetic field near a long straight wire?
The field consists of straight lines perpendicular to the wire.
The field consists of straight lines parallel to the wire.
The field consists of radial lines originating from the wire.
The field consists of concentric circles centred on the wire.
- 5. Multiple Choice
The relative strength of the magnetic field is shown by the degree of closeness of the field lines.
false
true
can't say
- 6. Multiple Choice
A current carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor:
From top to bottom
From left to right
From bottom to top
From right to left
- 7. Multiple Choice
Which of the following diagrams correctly shows the magnetic field produced by a current- carrying wire?
A
B
C
D
- 8. Multiple Choice
The shape of the magnetic field lines produced by a current carrying conductor are:
Straight lines
Concentric circles
Concentric ellipse
Concentric parabolas
- 9. Multiple Choice
The pattern of the magnetic field produced by the straight current carrying conducting wire is
in the direction opposite to the current
in the direction parallel to the wire
circular around the wire
in the same direction of current
- 10. Multiple Choice
The nature of magnetic field line passing through the centre of current carrying circular loop is :
circular
ellipse
parabolic
straight line
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