Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

1234 Ohm
3890 Ohm
844.5 Ohm
692.2 Ohm
None of these

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Electronic Principles
Current is

The number of free electrons in an atom
The flow of charged particles through a material
An imbalance of electrical charges
The force that causes electrons to flow
None of these

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Electronic Principles
What is the primary difference between primary and secondary cell batteries?

Primary-cell batteries use chemical cells, whereas secondary-cell batteries use an alternative energy source, such as thermal or magnetic energy, to supplement their outputs
None of these
Secondary-cell batteries can be recharged and used many times, whereas primary-cell batteries cannot be properly recharged
Primary-cell batteries must be recharged at a much slower rate that secondary-cell batteries
Primary-cell batteries can be recharged and used many times, whereas secondary-cell batteries cannot be properly recharged

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Electronic Principles
The dielectric constant of a material is a measure of:

how well the material concentrates electrostatic lines of force
None of these
the amount of voltage it can withstand before breaking down
how well the material concentrates magnetic lines of force
the amount of opposition to the current flow

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