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Electronic Principles

Electronic Principles
Holes act like:

Crystals
None of these
Atoms
Negative charges
Positive charges

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Electronic Principles
A typical light switch in your home is a:

momentary push button switch
None of these
rotary switch
knife switch
toggle switch

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Electronic Principles
What is the total resistance of a parallel circuit that contains two resistors having values of 220 ohm and 470 ohm?

690 ohm
445 ohm
220 ohm
150 ohm
None of these

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Electronic Principles
What form of energy is used for creating static electricity?

Mechanical energy
Light energy
None of these
Solar energy
Chemical energy

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Electronic Principles
Current and voltage are said to be in phase when:

their waveforms cross through zero and reach positive and negative peaks at the same time
they have the same amplitude and frequency
their waveforms are both ac or both dc
None of these
All of these

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Electronic Principles
If a load resistance is 1 kW, a stiff voltage source has a resistance of

Less than 100 k Ohm
More than 100 k Ohm
None of these
At least 10 Ohm
less than 10 Ohm

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