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Electronic Principles

Electronic Principles
The equivalent of 1 micro A is:

one-millionth of an ampere
10000A
None of these
1000 A
one million amperes

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Electronic Principles
The merging of a free electron and a hole is called

None of these
Lifetime
Thermal energy
Recombination
Covalent bonding

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Electronic Principles
What is the total resistance of a series circuit that contains four resistors having values of 220W, 470W, 1W, and 1.2W?

844.5 Ohm
1234 Ohm
692.2 Ohm
None of these
3890 Ohm

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Electronic Principles
Which one of the following statements regarding ac circuits is correct?

Current leads the voltage through a resistor
Current lags the voltage through a resistor
None of these
All of these
Current and voltages are in phase through a resistor

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Electronic Principles
What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

99.3 Ohm
70.7Ohm
60 Ohm
250 Ohm
None of these

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Electronic Principles
How much power is being dissipated by a 1000 W resistance that has 25 V applied to it?

80 W
0.625 W
0.24 W
None of these
325 kW

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