Physics Online One Word Test-2
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total number of question is 35
one word question is 30 and five 2 mark questions
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by
M. Nandha Kumar
- 1.
Define the magnetic dipole moment
- 2.
Write the right hand thumb rule
- 3.
Define coulomb's inverse square law
- 4.
Define biot-savert law
- 5.
Write any three properties of magnet
- 6.
The colour code on a carbon resistor is red-red-black. The resistance is
- A.
2.2 ohm
- B.
22 ohm
- C.
2202.2 ohm
- D.
2.2 ohm
Correct Answer
B. 22 ohm -
- 7.
Which of the following has a negative temperature coefficient of resistance
- A.
Copper
- B.
Tungsten
- C.
Carbon
- D.
Silver
Correct Answer
C. Carbon -
- 8.
Which of the following material has the highest specific resistance...
- A.
Rubber
- B.
Silver
- C.
Germanium
- D.
Glass
Correct Answer
A. Rubber -
- 9.
Temperature coefficient of resistance for metal is
- A.
Constant
- B.
Positive
- C.
Zero
- D.
Negative
Correct Answer
B. Positive -
- 10.
Resistance increases with increases in temperature for
- A.
Conductor
- B.
Semiconductors
- C.
Insulators
- D.
Superconductors
Correct Answer
A. Conductor -
- 11.
Conductor which obey ohm's law are called
- A.
Dielectrics
- B.
Superconductors
- C.
Ohmic conductors
- D.
Semiconductors
Correct Answer
C. Ohmic conductors -
- 12.
Conductivity is the reciprocal of
- A.
Resistance
- B.
Specific resistance
- C.
Conductance
- D.
Potential difference
Correct Answer
B. Specific resistance -
- 13.
Nichrome wire is used as the heating element because it has
- A.
Low specific resistance
- B.
Low melting point
- C.
High specific resistance
- D.
High conductivity
Correct Answer
C. High specific resistance -
- 14.
Peltier effect is the converse of
- A.
Joule effect
- B.
Raman effect
- C.
Thomson effect
- D.
Seebeck effect
Correct Answer
D. Seebeck effect -
- 15.
In an electric circuit, fuse wire is connected in
- A.
Parallel
- B.
Star connection
- C.
Delta connection
- D.
Series
Correct Answer
D. Series -
- 16.
The resistance of the wire varies inversely as
- A.
Area of cross section
- B.
Resistivity
- C.
Length
- D.
Temperature
Correct Answer
A. Area of cross section -
- 17.
Which material is having a small value of temperature coefficient of resistance
- A.
Copper
- B.
Constantan or manganin
- C.
Nichrome
- D.
Both b and c
Correct Answer
D. Both b and c -
- 18.
The unit of electromotive force is
- A.
Joule
- B.
Newton
- C.
Coulomb
- D.
Volt
Correct Answer
D. Volt -
- 19.
The direction of conventional current is taken as the direction of flow of
- A.
Positive charges
- B.
Same direction of flow of electron
- C.
Opposite to positive charges
- D.
All of the above
Correct Answer
A. Positive charges -
- 20.
Current is a
- A.
Vector quantity
- B.
Scalar quantity
- C.
Particular direction
- D.
All the above
Correct Answer
B. Scalar quantity -
- 21.
The drift velocity is equal to mobility when
- A.
The electric field is parallel to the motion of electrons
- B.
The electric field is unity
- C.
The absence of electric field
- D.
Either a and b
Correct Answer
B. The electric field is unity -
- 22.
The resistance of mercury is '0' when its temperature is reduced to
- A.
4.3 K
- B.
4.2 K
- C.
2.4 K
- D.
-4.2 K
Correct Answer
B. 4.2 K -
- 23.
In power transmission, that power losses may occurs
- A.
True
- B.
False
Correct Answer
A. True -
- 24.
The charges flow from low potential to high potential
- A.
True
- B.
False
Correct Answer
B. False -
- 25.
The potentiometer wire is made up of
Correct Answer
manganin, Manganin, Mn - 26.
Coulomb inverse square law directly depends on
- A.
Pole strength
- B.
Radial distance
- C.
Charges
- D.
Magnitude of the charges
Correct Answer
A. Pole strength -
- 27.
The direction of magnetic dipole moment is
- A.
East to west
- B.
South pole to north pole
- C.
North pole to south pole
- D.
West to east
Correct Answer
B. South pole to north pole -
- 28.
Electric field and the magnetic field is one to depended
- A.
True
- B.
False
Correct Answer
A. True -
- 29.
Who first invented, the electric current produce the magnetic field
Correct Answer
h.c.orested, H.C.Orested, orested - 30.
Which one has more magnetic field at the point of observation
- A.
Magnetic dipole on axial line
- B.
Magnetic dipole at equatorial plane
Correct Answer
A. Magnetic dipole on axial line -
- 31.
Magnetic field of magnetic dipole on equatorial plane is
- A.
B=P
- B.
B=-P
Correct Answer
B. B=-P -
- 32.
The electric current flow through straight-line conductor in x axis, its creates a magnetic field at
Correct Answer
y-axis, y axis, perpendicular to the direction, perpendicular - 33.
The magnetic susceptibility is positive for dia magnetic
- A.
True
- B.
False
Correct Answer
B. False -
- 34.
Magnetic dipole in the uniform magnetic field its experiences the torque
- A.
True
- B.
False
Correct Answer
A. True -
- 35.
The denotation or symbol of the magnetic field
Correct Answer
B
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Mar 17, 2022Quiz Edited by
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Jul 11, 2020Quiz Created by
Nandha Kumar
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