FRAME

NO.116

We have seen that either METRIC PREFIXES or POWERS of 10 may be used to replace the

zero digits in very large or small measurements.

For example: .000000000005 V = 5 X 10-12 V or 5 pV

33,000,000 Ω =33 X 106 Ω or 33 mΩ

Usually, to solve a problem involving electrical measurements, all numbers with prefixes are

converted to basic units times powers of 10. After the problem is solved, the answer may be

expressed with a prefix if required or desired.

FRAME

NO. 117

Which of the following expressions are equivalent to .0000068 mA?

A.

6.8 pA

B.

.0000000068 A

C.

6,800 pA

D.

6.8 X 10-12 A

E.

6.8 X 10-9 A

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