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1- What is the current in amperes if 1300 Na+Na+ ions flow across a cell membrane...

1- What is the current in amperes if 1300 Na+Na+ ions flow across a cell membrane in 3.2 μsμs ? The charge on the sodium is the same as on an electron, but positive.

Express your answer to two significant figures and include the appropriate units.

2- What voltage will produce 0.45 AA of current through a 4800-ΩΩ resistor?

Express your answer to two significant figures and include the appropriate units.

3- An electric device draws 4.60 AA at 240 VV.If the voltage drops by 35 %% , what will be the current, assuming nothing else changes?

Express your answer to two significant figures and include the appropriate units.

b- If the resistance of the device were reduced by 35 %% , what current would be drawn at 240 VV?

Express your answer to two significant figures and include the appropriate units.

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