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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of the following represents ohms law

 J = σE
All of these
 I = GV
 V = RI

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Electromagnetic Field Theory
The drawback of Daltons atomic structure is that, it says

 none of these.
 unique nature of atom.
 the atoms can neither be created nor be destroyed.
 most of the volume of an atom is empty space.

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Electromagnetic Field Theory
Cork Screw rule is used to find

 direction of electric field.
 direction of emf.
 direction of current.
 direction of magnetic field.

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Electromagnetic Field Theory
The Biot-savarts law is a general modification of

 Faradays law.
 Lenzs law.
 Amperes law.
 Kirchhoffs law.

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Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as

 V = IR.
 R = ρ × ( l / A).
 J = E / σ.
 J = σE.

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Electromagnetic Field Theory
In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to

No change in the impedance value
An increase in the value of reactance
Decrease in the value of reactance
No change in the reactance value

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