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Module 26105-02: Electrical Theory Two

1 .       In a parallel circuit, the current is the same in all parts of the circuit. [Hint]


2 .       In a series circuit, the total resistance is equal to the sum of the resistances of all the parts of the circuit. [Hint]


3 .       The formula RT = R1 X R2 / R1 + R2 can be used to calculate the resistance of two resistors in a series circuit. [Hint]


4 .       With resistors connected in parallel, the total resistance is always more than the resistance of a single branch. [Hint]


5 .       Four 144-ohm resistors connected in parallel have a total resistance of 36 ohms. [Hint]


6 .       When four resistors with values of 10 ohms, 20 ohms, 50 ohms, and 100 ohms are connected in parallel, they have a total resistance of 0.18 ohm. [Hint]


7 .       A parallel circuit is one where there are both separate branches and series loads. [Hint]


8 .       Two 30-ohm resistors connected in parallel and in series with a 30-ohm resistor have a total resistance of 45 ohms. [Hint]


9 .       Current flow in a series-parallel circuit divides through all parallel paths and combines again to flow through the series parts of the circuit. [Hint]


10 .       In a series-parallel circuit, the voltage drops across the various circuit paths between the two terminals of a battery always add up to the total voltage supplied by the battery. [Hint]


11 .       The statement "The applied voltage minus (-) the sum of the voltage drops = 0" is a form of Kirchhoff's voltage law. [Hint]


12 .       Kirchhoff's first law states "The total current entering (flowing toward) a circuit junction equals the total current leaving (flowing away from) the junction." [Hint]


13 .       A 3-ohm and 6-ohm resistor are connected in parallel, and a 10-ohm resistor is in series with the combination. When 36 volts is applied to the three resistors, the total current in the circuit is 2 amps. [Hint]


14 .       A 20-ohm and 80-ohm resistor are connected in parallel across a 64-volt battery. The total current for this circuit is 4 amperes. [Hint]


15 .       For the circuit described in Question 14, the current flow through the 80-ohm resistor is 3.2 amps. [Hint]


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