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236 matching questions

Question #310Basic Electricity and Electronics

The unit of electrical resistance is the

  1. Joule.
  2. Ampere.
  3. Ohm. ✓ Correct answer
  4. Watt.

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Question #313Basic Electricity and Electronics

The type of current in a battery powered radio is..

  1. static current
  2. alternating current
  3. direct current ✓ Correct answer
  4. potential current

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Question #314Basic Electricity and Electronics

If you increase the voltage across a resistor, what happens to the current

  1. As the voltage increases, the current decreases.
  2. The current will not change if the resistor stays the same.
  3. As the voltage increases, the current increases. ✓ Correct answer
  4. None of the above
Explanation: By Ohm’s law (I = V/R), increasing the voltage across a fixed resistance increases the current.

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Question #315Basic Electricity and Electronics

The voltage drop across a series resistor is proportional to what other value?

  1. total resistance ✓ Correct answer
  2. its own resistance
  3. wattage rating
  4. the amount of time the circuit is on

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Question #316Basic Electricity and Electronics

One kilowatt hour of electrical energy is the same as

  1. 36 x 105.watts.
  2. 36 x 10s ergs
  3. 36 x 105 ✓ Correct answer
  4. 36 x 105 joules B.T.U.

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Question #317Basic Electricity and Electronics

An electric current of 5 A is same as

  1. 5 J / C
  2. 5 V / C
  3. 5 C / sec ✓ Correct answer
  4. 5 W/ sec.

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Question #318Basic Electricity and Electronics

Which of the following quantities can be measured in the unit of kilowatt • hour?

  1. Power
  2. Electrical energy ✓ Correct answer
  3. Fuse rating
  4. Power rating

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Question #319Basic Electricity and Electronics

Which of the following bulbs will have the least resistance ?

  1. 220 V, 60 W
  2. 220 V, 100 W
  3. 115 V, 60 W
  4. 115 V, 100 W. ✓ Correct answer

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Question #325Basic Electricity and Electronics

In a capacitor, the electric charge is stored in _

  1. Metal plates ✓ Correct answer
  2. Dielectric
  3. Terminals
  4. both a &c

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Question #327Basic Electricity and Electronics

If two resistors are placed in series, is the final resistance:

  1. Higher ✓ Correct answer
  2. Lower
  3. The same
  4. Cannot be determined

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Question #329Basic Electricity and Electronics

If the voltage on the base of a transistor increases, does it:

  1. Turn on
  2. Turn off
  3. Not enough information ✓ Correct answer
  4. Remain the same

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Question #330Basic Electricity and Electronics

A 100n capacitor in parallel with 10n produces:

  1. 90n
  2. 100n
  3. 110n ✓ Correct answer
  4. Cannot be determined

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Question #331Basic Electricity and Electronics

A resistor with colour bands: red-red-red-gold, has the value:

  1. 22k 5%
  2. 2k2 5% ✓ Correct answer
  3. 220R 5%
  4. 22R 5%

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Question #332Basic Electricity and Electronics

A resistor and capacitor in series is called a:

  1. Pulse Circuit
  2. Timing Circuit/Delay Circuit ✓ Correct answer
  3. Oscillator Circuit/Frequency Circuit
  4. Schmitt Circuit

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Question #333Basic Electricity and Electronics

A red-red-red-gold resistor in series with an orange-orange-orange-gold resistor produces:

  1. 5k5
  2. 35,200 ohms ✓ Correct answer
  3. 55k
  4. None of the above

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Question #334Basic Electricity and Electronics

To obtain a higher value of resistance, resistors are connected in:

  1. Reverse
  2. Forward
  3. Parallel
  4. Series ✓ Correct answer

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Question #335Basic Electricity and Electronics

A capacitor and coil in parallel is called:

  1. A Tuned Circuit ✓ Correct answer
  2. A Timing Circuit
  3. A Delay Circuit
  4. A Schmitt Circuit

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Question #336Basic Electricity and Electronics

The current in a circuit is 45mA. This is:

  1. 0.045A ✓ Correct answer
  2. 0.00045A
  3. 0.0045A
  4. 0.45A

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Question #337Basic Electricity and Electronics

A 100n capacitor can be expressed as:

  1. 0.1μ ✓ Correct answer
  2. 0.01μ
  3. 0.001μ
  4. none of the above

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Question #339Basic Electricity and Electronics

If a 10k resistor is placed across a 10v supply, the current will be:

  1. 10mA
  2. 1mA ✓ Correct answer
  3. 0.01mA
  4. 0.1mA

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