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Electronic Principles

Electronic Principles
How much current flows through a 60-W light bulb that is operating at 120 V?

180 A
None of these
0.083333333333333
7200 A
0.5A

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Electronic Principles
Suppose a current source has an Ideal current of 10 mA and an internal resistance of 20 MW. For what values of load resistance will the current source appear stiff?

20 k Ohm or more
200 k Ohm or more
None of these
20 km or less
200 k Ohm or less

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Electronic Principles
The direction of conventional current flow is:

from left to right
from negative to positive
from positive to negative
from neutral to positive
None of these

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Electronic Principles
A device that converts light energy to electrical energy is called a:

photo transistor
thermocouple
photodiode
solar cell
None of these

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Electronic Principles
Doubling the operating frequency of an inductive circuit:

None of these
doubles the amount of inductive reactance
multiplies the inductive reactance by 6.28
has no effect on the inductive reactance
cuts the inductive reactance in half

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Electronic Principles
A device that converts mechanical pressure to electrical energy is called a:

solar cell
None of these
nicad cell
piezoelectric device
photodiode

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