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A: Voltages varies on a circuit because current varies caused by difference in resistance

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15y ago

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How are parallel circuit and series circuit the same?

They are not. They are connected differently, and the voltages and currents behave in different ways.


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Use Kirchoff's law.


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What 2 voltages is a short circuit made of?

Circuits are not made of voltages, they are made of loops. A short circuit exists when a connection is added that is not supposed to be part of the intended circuit as designed. This added connection produces extra loops in the circuit that typically prevent current from reaching parts of the circuit where it is needed and can cause excessive current to flow in other parts of the circuit, resulting in damage to the components in the circuit.


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Use of complex numbers for circuit values (e.g. voltages, currents, reactances) is required to get correct answers for AC. The equations are the same as for DC circuits, but the numbers are complex not real. Also reactances vary with the frequency of the AC signals in the circuit.


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When it's assembled into a circuit with other components and a power supply, atransistor can be used to amplify changes in voltage, but it can't amplify voltages.


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