Electronic Principles
The component that forms the electrical connection between the rotating coil of wire in a motor and the external source of electrical energy is called the:

commutator
armature
None of these
battery
rotor

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Electronic Principles
Which one of the following statements is true for the voltages in a series RC circuit?

The total voltage is less than the sum of the voltages across the resistance and capacitance
None of these
The total voltage is equal to the sum of the voltages across the resistance and capacitance
The total voltage is greater than the sum of the voltages across the resistance and capacitance
The voltage always has the same amplitude and phase for every part of the circuit

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