Which of the following unit conversion is correct?

Which of the following unit conversion is correct?

A
1 esu cm= 3.3356 x 10^-12 C m
B
1 esu cm= 3.3356 x 10^-14 C m
C
1 esu cm= 3.3356 x 10^-16 C m
D
1 esu cm= 3.3356 x 10^-18 C m

Solution:

Here,

4.8 x 10^-10 esu = 1.602 x 10^-19 C.

Hence

1 esu cm = $(\frac{1.602 \times 10^{- 19} C}{4.8 \times 10^{- 10} esu}) (10^{- 2} m) = 3.3356 \times 10^{- 12} C m$

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