Wires diameters are usually specified by a number called the gauge. The smaller gauge wire has a larger diameter. For example, a
1 answer:
Answer:
Between a 12 gauge and a 22 gauge wire: the 12 gauge wire
Explanation:
Since the resistance in a wire is given by:
If both wires are made out of copper, the resistivity is the same.
The difference will remain in the cross area. The one with less area is the one with the greatest resistance.
Between the 2 gauge wires (22 and 12), the 12 gauge wire, with a diameter of 2.05mm is the one with smallest resistance.
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Answer:
Explanation:
The gravitational force between the proton and the electron is given by
where
G is the gravitational constant
is the proton mass
is the electron mass
r = 3 m is the distance between the proton and the electron
Substituting numbers into the equation,
The electrical force between the proton and the electron is given by
where
k is the Coulomb constant
is the elementary charge (charge of the proton and of the electron)
r = 3 m is the distance between the proton and the electron
Substituting numbers into the equation,
So, the ratio of the electrical force to the gravitational force is
So, we see that the electrical force is much larger than the gravitational force.