When a diode is operating in the reverse-bias mode,

a. the current flow is generally much larger than in forward bias.
b. the positive terminal of the power supply is connected to the p-side of the diode.
c. the recombination current is larger than the thermal electron current.
d. current varies significantly as a function of the applied voltage.
e. current is typically only a small fraction of the current when the same voltage is applied in forward bias.

e.
The reverse-bias current is very small, while the forward bias current grows rapidly with increasing voltage.

Physics & Space Science

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When an electron in a hydrogen atom changes its spin from the same to the opposite direction as the proton, it

A) absorbs a visible light photon. B) emits an X-ray photon. C) emits a radio wave photon. D) absorbs a radio wave photon. E) neither emits nor absorbs a photon.

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A light ray in air is incident on an air-to-glass boundary at an angle of 30.0° and is refracted in the glass at an angle of 16.7° with the normal. Find the index of refraction of the glass

a. 1.74 c. 1.23 b. 1.40 d. 2.13

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In the trajectory of a thrown object, like a baseball, the weight force is always downward. However, the force of air resistance is always

A. tangent to the trajectory and in the direction opposite the velocity. B. perpendicular to the trajectory. C. horizontal. D. upward.

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What is the atomic number of a neutral atom that has an electron configuration of 1s2 2s2 2p6 3s2 3p2?

A) 5 B) 11 C) 14 D) 20

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