Electronic Principles
What form of energy is used for creating static electricity?

Light energy
Mechanical energy
Solar energy
None of these
Chemical energy

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Electronic Principles
Molecule is

A atom that flows whenever there is an imbalance of electrical charges between two points
A atom that has a shortage of electrons in its outer orbit
The smallest particle of a substance that retains the properties of that substance
A atom that has an excessive number of electrons in its outer orbit
None of these

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Electronic Principles
The core of an electromagnet is said to be in saturation when:

changing the polarity of the current in the coil changes the polarity of the magnetic field around the core
None of these
an increase in current through the coil causes no further increase in the mmf
the core is permitted to move freely within the coil
frequent changes in the direction of current through the coil causes heating effects in the core material

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