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ELECTRIC CIRCUITS

Electric Circuits
Among the options which metal has the highest electrical conductivity?

 Aluminium.
 Stranded aluminium.
 Steel.
 Copper.

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Electric Circuits
While comparing magnetic field and electric circuits, the point of dissimilarity exists while considering

 permeance and conductance.
 mmf and emf.
 reluctance and resistance.
 flux and current flow.

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Electric Circuits
A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to

 222 AT / m.
 144 AT / m.
 72 AT / m.
 196 AT / m.

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Electric Circuits
The mass of the atom is determined by

 electron and proton.
 neutron and proton.
 electrons.
 proton.

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Electric Circuits
The absolute charge of an electron is

 none of above.
 - 1.6 × 10-19 C.
 + 1.6 × 10-19 C.
 1.6 × 10-19 C.

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