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Physics MCQs Quiz For Entry Test
1. Magnetic field is as:
Scalar as well as vector quantity
Vector quantity (Answer)
Scalar quantity
None of these
2. When the ohmeter measures the infinite resistance, its pointer lies at:
Right end of the scale
Left end of the scale (Answer)
Right quarter portion of the scale
Centre of the scale
3. Magnetic lines of force:
Cannot intersect at all (Answer)
Intersect at infinity
Intersect within magnet
Intersect at neutral points
4. Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
Thumb (Answer)
Curled fingers
Middle finger
Arm of right hand
5. n avometer measures:
D.C. voltages only
Currents only
A.C. voltages only
All of these (Answer)
6. The permeability of free space is measured in:
Am/Wb
Wb A/m
m/ Web A
Wb/Am (Answer)
7. A current is passed through a straight wire. The magnetic field established around it has its lines of force:
Oval in shape and endless
Straight
Parabolic
Circular and endless (Answer)
8. An avometer can measure:
Resistance in ohms
Potential difference in volts
Current in amperes
Any of these (Answer)
9. The resistance of the shunt is:
Very small (Answer)
Very large
None of these
Large
10. When some compass needles are placed on a card board along a circle with the centre at the wire, they will:
Point in the direction of N-S (Answer)
Set themselves tangential to the circle
Point in the direction of S-E
Point in the direction of E-W
11. An avometer can be used to act as ammeter, voltmeter or ohmmeter with the help of:
Range selection switch
Function selector switch (Answer)
CRO
Function selector switch and CRO
12. Strength of magnetic field is measured in SI units, in:
Nm/A
N/Am (Answer)
N
Am/N
13. Magnetic flux density at any point due to current carrying conductor can be computed by:
Ampere's law (Answer)
Newton's law
Faraday's law
Lenz's law
14. The direction of magnetic lines of force around a current carrying wire is given by:
Head to tail rule
Right hand rule (Answer)
None of these
Faraday's law
15. Amperean path is a:
Any of above (Answer)
Circular path
Rectangular path
Closed path
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