# Problem: Millikan determined the charge on the electron by studying the static charges on oil drops falling in an electric field. A student carried out this experiment using several oil drops for her measurements and calculated the charges on the drops. She obtained the following data:Droplet Calculated Charge (C) A1.60 x 10–19B3.15 x 10–19C4.81 x 10–19D6.31 x 10–19How many significant figures should she report for the value of the electronic charge?

###### FREE Expert Solution

Recall:

• In addition and subtraction → the answer carries the number of decimal places with the as the quantity with the lowest number.
• In multiplication and division → the answer carries the number of significant figures as the factor with the fewest decimal place
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###### Problem Details
Millikan determined the charge on the electron by studying the static charges on oil drops falling in an electric field. A student carried out this experiment using several oil drops for her measurements and calculated the charges on the drops. She obtained the following data:
 Droplet Calculated Charge (C) A 1.60 x 10–19 B 3.15 x 10–19 C 4.81 x 10–19 D 6.31 x 10–19

How many significant figures should she report for the value of the electronic charge?