URGENT! Homework Electronics Help!?

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Pippileney

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I can use ANY source to answer these questions. It is in NO way cheating.
Please, please, please (!!!) answer one or more of the following questions:

1. Resistors oppose the flow of electrons. The value of resistance in a circuit is an important part of the calculation of electrical power. Explain electrical power in a circuit that contains a source of Electromotive Force (Voltage) an resistance.

2. Two or more resistors in series are additive and current decreases as additional series resistors are inserted to the circuit. Resistors in parallel reduce the effective resistance of the circuit and current increases as additional parallel resistors are inserted into the circuit. Draw diagrams of circuits with resistors in series and with resistors parallel and with combinations of series/parallel resistors. Derive the formulas for each of the circuits your draw (You need not use values. Algebraic symbols are adequate.)

3. What are the dangers of the following practices:
a. Inserting a fuse or circuit breaker into a circuit that is electrically larger than the design specs of the circuit.
b. Using resistors into a circuit that have a smaller power dissipation that the calculated needs.
c. hooking electrical devices up to voltage sources that are greater than the design specifications of those devices.
 
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