Electronics Questions and Answers

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What is biasing?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Using a diagram, explain how doping produces a p-type semi-conductor.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Using the band theory, differentiate between conductor and a semi-conductor .

asked Aug 18, 2021 in Physics Form 4 by anonymous

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The diagram below shows an electrical appliance connected to the mains.

asked Aug 18, 2021 in Physics Form 4 by anonymous

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How much current is taken by a bulb whose rate is 100Ω and which is designed for mains supply of 240V?

asked Aug 18, 2021 in Physics Form 4 by anonymous

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Describe briefly how an N-type and a P-type semi conductors are made.

asked Jul 13, 2021 in Physics Form 4 by anony mous

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The figure below shows a block diagram of a p-n junction diode.

asked Jul 7, 2021 in Physics Form 4 by anonymous

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A step down transformer has 600 turns in the primary coil. The input voltage is 120 V while the output voltage is 24 V. Determine the number of turns in the secondary coil.

asked Jun 21, 2021 in Physics Form 4 by anonymous

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A consumer has the following appliances in the house:

asked Jun 21, 2021 in Physics Form 4 by anonymous

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An electric cooker is rated 2.5 kW, 250 V. State the meaning of these values

asked Jun 21, 2021 in Physics Form 4 by anonymous

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State two ways of minimising power losses during the transmission of electric power.

asked Jun 21, 2021 in Physics Form 1 by anonymous

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Draw a diagram to show a p-n junction connected in the reverse bias mode.

asked Jun 21, 2021 in Physics Form 4 by anonymous

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