Residential building codes typically require the useof 12 - gauge copper wire (diameter 0.205 cm) for wiring receptacles.Such circuits carry currents as large as 20.0 A. If a wireof smaller diameter (with a higher gauge number) carried thatmuch current, the wire could rise to a high temperature andcause a fire. (a) Calculate the rate at which internal energy isproduced in 1.00 m of 12 - gauge copper wire carrying 20.0 A.(b) Repeat the calculation for a 12 - gauge aluminum wire.(c) Explain whether a 12 - gauge aluminum wire would be assafe as a copper wire.
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
Residential building codes typically require the use
of 12 - gauge copper wire (diameter 0.205 cm) for wiring receptacles.
Such circuits carry currents as large as 20.0 A. If a wire
of smaller diameter (with a higher gauge number) carried that
much current, the wire could rise to a high temperature and
cause a fire. (a) Calculate the rate at which internal energy is
produced in 1.00 m of 12 - gauge copper wire carrying 20.0 A.
(b) Repeat the calculation for a 12 - gauge aluminum wire.
(c) Explain whether a 12 - gauge aluminum wire would be as
safe as a copper wire.
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