Question

One-millionth of a second is .................

Answer 1

A microsecond is an SI unit of time equal to one millionth (0.000001 or 10−6 or 1⁄1,000,000) of a second. Its symbol is μs, sometimes simplified to us when Unicode is not available. A microsecond is equal to 1000 nanoseconds or 1⁄1,000 of a millisecond.

Answer 2

One-millionth of a second is 1 microsecond.

To properly understand this answer, we have to know more about microsecond.

Second and microsecond

• Both, microsecond and second are units for time measurement.
• As the name suggest, microsecond is used for measuring smaller times as compared to second.

Furthermore,

We will analyse the the relationship between second and microsecond.

We know that,

1 microsecond = (1 × 10⁻⁶) second

1 microsecond = (1 ÷ 10⁶) second

Now,

1 million = 1000000 = 10⁶

Which implies,

1 microsecond is one-millionth part of a second. (we came to this conclusion by comparing 10⁶ and 1 million)

So, microsecond becomes the correct answer to the given question.

Hence, one-millionth of a second is 1 microsecond.