SEPTA Electrician Practice Test

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What is the value of the mega prefix (M)?

1,000,000

Mega is the SI prefix that means one million, i.e., 10^6. It scales a unit up by a factor of one million, so a megawatt is one million watts and a megabyte is one million bytes. The other prefixes represent different scales—kilo is a thousand, milli is one thousandth, and giga is a billion—so they describe other amounts, not mega.

1,000

0.001

1,000,000,000

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