Question

Charge of an electron is $0.00000000000000000016$ coulomb. This number can also be written in standard form as:

• A. $1\cdot 6\times {10}^{19}$
• B. $1\cdot 6\times {10}^{-20}$
• C. $1\cdot 6\times {10}^{-19}$
• D. $1\cdot 6\times {10}^{18}$

Answer 1

The correct option is C $1\cdot 6\times {10}^{-19}$

$0.0000000000000000000016=\frac{16}{100000000000000000000}$

=$\frac{1\cdot 6\times {10}^1}{{10}^{20}}$

=$1\cdot 6\times {10}^{-19}$