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Electromagnetic Field Theory
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m?
1.19 m.
1.29 m.
1.59 m.
1.39 m.
1.19 m.
1.29 m.
1.59 m.
1.39 m.
Answer
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Related Question
Electromagnetic Field Theory
A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be
3.75 N.
20 N.
7.5 N.
15 N.
3.75 N.
20 N.
7.5 N.
15 N.
Answer
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Electromagnetic Field Theory
A coil of 300 turns is wound on a non-magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The current of 3 A will be
113.04 mH.
37.68 mH.
113.04 µH.
37.68 µH.
113.04 mH.
37.68 mH.
113.04 µH.
37.68 µH.
Answer
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Electromagnetic Field Theory
When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .
Reflection
Transmission
None of these
Refraction
Reflection
Transmission
None of these
Refraction
Answer
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Electromagnetic Field Theory
Mutual inductance between two magnetically coupled coils depends on
the number of their turns.
all of above.
cross sectional area of their common core.
permeability of core.
the number of their turns.
all of above.
cross sectional area of their common core.
permeability of core.
Answer
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Electromagnetic Field Theory
1 Maxwell is the same as
10-8 weber.
10-8 weber.
10-4 weber.
104 weber.
10-8 weber.
10-8 weber.
10-4 weber.
104 weber.
Answer
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