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Aleonysh [2.5K]
4 years ago
15

Why do resistors have tolerance?

Physics
1 answer:
MariettaO [177]4 years ago
8 0
Machines capable of manufacturing exactly the same component time after time,
with exactly the resistance you want, would be very expensive, and so would the
products they turn out.  A resistor would cost a dollar instead of a few pennies.
The machine itself, and its output, work within tolerances.

The cheapest mass-produced resistors are guaranteed to be within 20% above
or below the resistance marked on them.  And you know what ?  For most bench-
work and prototyping, that's usually close enough.
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In a transformer, energy is carried from the primary coil to the secondary coil by:________
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In a transformer, energy is carried from the primary coil to the secondary coil by magnetic field in the iron core.

To find the answer, we have to know more about the transformer.

<h3>How transformer works?</h3>
  • An item utilized in the transfer of electric energy is a transformer.
  • AC current is used for transmission.
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  • EMF is therefore generated in the secondary coil.

Thus, we can conclude that, in a transformer, energy is carried from the primary coil to the secondary coil by magnetic field in the iron core.

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The chemical energy of petrol is converted to heat energy on combustion. The heat energy is converted to kinetic energy by the use of internal combustion engines in vehicles. The law of conservation of energy is maintained in each process.

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Given is a diagram of energy conversion due to combustion.

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When the distance between two interacting objects doubles, the gravitational force is
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The gravitational force will be one quarter.

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