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Question
Electric dipole moment is usually expressed in debye units. Here, 1 debye unit equals
Options
A. 3.33 x 10
-30
C-
m
B. 3.33 x 10
-30
C-
m
2
C. 3.30 x 10
-10
C-
m
D. 3.33 x 10
-10
C-
m
2
Correct Answer
3.33 x 10
-30
C-
m
Materials and Components problems
Search Results
1. The number of tightly bound electrons in silicon atom are
Options
A. 14
B. 10
C. 6
D. 4
Show Answer
Scratch Pad
Discuss
Correct Answer: 10
Explanation:
Silicon has 14 electons and 4 valence electrons. The 10 electrons in the inner orbits are tightly bound.
2. A dielectric is subjected to alternating field. The dielectric losses are potential to
Options
A. real part of dielectric constant
B. imaginary part of dielectric constant
C. both real and imaginary parts of dielectric constant
D. either real or imaginary part of dielectric constant
Show Answer
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Discuss
Correct Answer: imaginary part of dielectric constant
Explanation:
Absorption of energy is proportional to imaginary part of complex dielectric constant.
3. The spin angular momentum along a given direction is either
or
.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
4. The equation D = ?
0
?
r
E refers only to isotropic materials.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
5. Lines of magnetic field cannot intersect.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
6. An electron (charge -
e
) is rotating in a circular orbit of radius R, around a proton with charge +
e
at a constant angular velocity ?. The orbital magnetic dipole moment is
Options
A. 0.5
e
? R
2
B.
e
? R
2
C. 2
e
? R
2
D. 0.5
e
? R
3
Show Answer
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Discuss
Correct Answer: 0.5
e
? R
2
7. The dielectrics having only one kind of atoms are known as elemental dielectrics.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
8. A circular sphere mile is the area of cross-section of a wire
Options
A. having a diameter equal to 1 miles
B. having a radius equal to 1 miles
C. having a circumference equal to 1 miles
D. none of the above
Show Answer
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Discuss
Correct Answer: having a diameter equal to 1 miles
9. 1 Bohr magneton =
.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
10. Which of the following is used in lightning arresters?
Options
A. Thermistor
B. Photoconductor
C. Transistor
D. Varistor
Show Answer
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Discuss
Correct Answer: Varistor
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