Electronic Principles
Current can flow through a normally open push button switch as long as:

its contact remain open
None of these
you are pressing the button
its contact remain open
you are not pressing the button

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Electronic Principles
Which one of the following phrasers best describes flux density?

The concentration of lines of magnetic force
The force that maintains lines of force
The opposition to a build-up of magnetic fields
None of these
The rate of change of the number of lines of magnetic force

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Electronic Principles
Which one of the following statements is true for current flowing in a series circuit?

The total current in a series circuit is equal to the total voltage multiplied by the total resistance
None of these
The same current flows through every part of a series circuit
The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit

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