Quantities and Units - Engineering

Q1:

The number 4.38 × 10–3 expressed as a number having a power of 10–6 is

A 4,380 × 10–6

B 438 × 10–6

C 43,800 × 10–6

D 438,000 × 10–6

ANS:A - 4,380 × 10–6

10^3 ÷ 10^-6
10^3 is came,
4.38÷1000 = 4380.