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What is the current produced by the solar cells of a pocket calculator through which 4.00 C of charge passes in 4.00 hr? Give your answer in mA.

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rokettojanpu

The average current passing through a device is given by:

I = Q/Δt

I is the average current

Q is the amount of charge that has passed through the device

Δt is the amount of elapsed time

Given values:

Q = 4.00C

Δt = 4.00hr = 14400s

Plug in the values and solve for I:

I = 4.00/14400

I = 0.000277777778A

I = 0.278mA

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