Current electricity questions | form six Physics

(5964) Question Category: Short answers

What is meant by “power rating “ as regards to a resistor?.

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(5965) Question Category: Short answers

Mention two distinct velocities of an electron in a wire.

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(5966) Question Category: Mathematical Calculation

A 20kOmega resistor is to be connected across a potential difference of 300V. Calculate the required power rating.

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(5967) Question Category: Short answers

Explain the following observation:

  1. Light in the bulb come on once the switch is kept on depite the drift velocity of electrons being very low.
  2. The potentiometer is said to be a better device for measuring the potential difference (p.d) than a moving coil voltmeter.

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UNSOLVED

(5968) Question Category: Short answers

What is band theory?

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UNSOLVED


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