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BOOK 3 KEY June 13, 2019 4:33 PM Final Exam Review Page 1

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BOOK 3 KEYJune 13, 2019 4:33 PM

Final Exam Review Page 1

Final Exam Review Page 2

Final Exam Review Page 3

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A battery is a combination of two or more electrochemical cells.

Electrons are repelled from the negative end of a cell and attracted to the positive end of a cell. In order for this movement to occur, they must move through the entire circuit before coming back to the cell.

A series electrical circuit allows for the movement of electrical charges through it but only along one path. There are no branches.

R = V ÷ I

R = 120 V ÷ 2 A

R = 60

= The lamp has a current of 60 .

ITotal = V ÷ R

I = 30 V ÷ 3

I = 10 A

The total current is 10 A in the circuit.

ITotal parallel = I1 + I2 +I3

10 A = 2 A + 3 A + I3

10 A – 5A = I3

5A = I3

Therefore, the third branch carries a current of 5 A.

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