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Home Electronics Resistance and Power See What Others Are Saying!
  • Question
  • A wire with a smaller cross-sectional area will produce:


  • Options
  • A. less heat
  • B. more conductance
  • C. less resistance
  • D. more heat

  • Correct Answer
  • more heat 


  • More questions

    • 1. It is not possible to use a half-wave rectifier circuit without a transformer.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. Asynchronous counters are often called ________ counters.

    • Options
    • A. toggle
    • B. ripple
    • C. binary
    • D. flip-flop
    • Discuss
    • 3. How is ac current related to ac voltage in a purely capacitive circuit?

    • Options
    • A. AC current is 0.707 of the ac voltage.
    • B. AC current lags ac voltage.
    • C. AC current is 0.637 of the ac voltage.
    • D. AC current leads ac voltage.
    • Discuss
    • 4. The power gain (Ap) of any transistor amplifier circuit equals the ___________.

    • Options
    • A. current gain squared
    • B. current gain times the voltage gain
    • C. voltage gain times the output resistance
    • D. current gain plus the voltage gain
    • Discuss
    • 5. If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. cannot tell
    • Discuss
    • 6. 

      If the switch is moved to position 1 in the given circuit, how long will it take for the current to reach its maximum value?


    • Options
    • A. 72.5 µs
    • B. 532 µs
    • C. 610 µs
    • D. 833 µs
    • Discuss
    • 7. A coprocessor is a microprocessor designed with a limited instruction set optimized to perform arithmetic operations very quickly.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. Total emitter current is:

    • Options
    • A. IE ? IC
    • B. IC + IE
    • C. IB + IC
    • D. IB ? IC
    • Discuss
    • 9. Which control should be moved to display more cycles of a signal on an oscilloscope?

    • Options
    • A. horizontal position to left or right
    • B. volts/cm to a smaller number
    • C. vertical position to top or bottom
    • D. time/cm to a higher setting
    • Discuss
    • 10. Which equation determines individual resistor voltage drop?

    • Options
    • A. V x R
    • B. I2 x R
    • C. V x I
    • D. I x R
    • Discuss


    Comments

    Avatar
    CuriousCat
    R is inversely proportional to its Area. If Area becomes smaller, then the resistance increases. P is inversely proportional to the Resistance. If Area increases, then the Power will decrease. But why is the answer more heat?


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