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Electronics
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Resistance and Power
Comments
Question
4 amperes will flow through a 10 Ω resistor if 20 volts are placed across the resistor.
Options
A. True
B. False
Correct Answer
False
Resistance and Power problems
Search Results
1. A 2% 55 kΩ resistor would have a color coding of green, green, black, red, red.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
2. The basic instrumentation amplifier has ________ input(s).
Options
A. 1
B. 2
C. capacitive
D. resistive
Show Answer
Scratch Pad
Discuss
Correct Answer: 2
3. The precision rectifier circuit is designed to _________.
Options
A. rectify waveforms with very large voltage swings
B. rectify waveforms with very small voltage swings
C. rectify precision waveforms
D. amplify and rectify waveforms
Show Answer
Scratch Pad
Discuss
Correct Answer: rectify waveforms with very small voltage swings
4. If an operational transconductance amplifier (OTA) is used as an amplitude modulator, the voltage gain is varied by applying a _________ voltage to the ______ input.
Options
A. demodulation, bias
B. modulation, bias
C. bias, modulation
D. low-frequency, bias
Show Answer
Scratch Pad
Discuss
Correct Answer: modulation, bias
5. The gain of an OTA is the ratio of the output current to the input voltage, and is measured in _____________.
Options
A. amps
B. volts
C. siemens
D. no units
Show Answer
Scratch Pad
Discuss
Correct Answer: siemens
6. The resistive track of a rheostat or potentiometer can be classified as having either a linear or tapered resistance.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
7. Carbon composition resistors are the most common and the least expensive type of fixed-value resistor.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
8. The maximum potential a material can withstand without rupture is called breakdown voltage.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: False
9. A protoboard is used to make experimental circuits.
Options
A. True
B. False
Show Answer
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Discuss
Correct Answer: True
10. A digital voltmeter can be used to measure resistance.
Options
A. True
B. False
Show Answer
Scratch Pad
Discuss
Correct Answer: True
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