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Tungsten filament of bulbs has a hot resistance higher than its cold resistance due to its temperature coefficient which is

A. Positive

B. Negative

C. Zero

D. Infinite

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  1. What is the reading of an ohmmeter for a shorted capacitor?
  2. In the 5-band method of capacitor color codinga the first band indicates
  3. The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfera…
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  5. What is the specific resistance of a pure germanium?
  6. Which is considered as the effect of a dielectric material?
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  12. Which factor does not affect resistance?
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    When two pure sine waves of the same frequency and the same amplitude which are exactly 180 outof-phase are added togethera the result is
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  30. The temperature-resistance coefficient of pure gold is