Analog Electronics
The load voltage is approximately constant when a zener diode is

  forward biased.
  reverse biased.
  unbiased.
  operating in breakdown region.

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Analog Electronics
The arrowhead on the transistor symbol points in the direction of

  minority carrier flow in the emitter region.
  conventional electric current flow in the emitter region.
  electron flow in the emitter region.
  majority carrier flow in the emitter region.

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