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Q Cells Solar

Emma Said:

A calculator draws 15mA of current from a solar cell for 25 seconds. Calculate the total charge.?

We Answered:

I'm not sure if the Coulomb number is 6.24 or 6.23 in the mantissa, if you're being really stringent.

The number of electrons passing through per second are

0.015 A x 1 s x (Coulomb), so your second answer is 25 times too high.

Otherwise, looks great. Thank you for attempting the problem then asking for verification. Too many students don't even try, they just post and want others to solve their problems.

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