WebResistance of a wire depends upon: Length of wire: Resistance is directly proportional to the length of a wire. Area of a cross-section of wire: Resistance is inversely proportional to … WebJan 26, 2024 · Answer: R ≈ 0.004 Ω. Remark 1: As we see, resistance of a wire is lower when the wire gauge is thicker. Specifically, when the diameter of a cylindrical wire doubles, its resistance decreases to one-fourth of the original wire. Thus, wire gauge is not only an indication of its shape.
The specific resistance of a rod of copper as compared to that of …
WebMeasure of how much a specific material resists current flow. ... Resistance depends on an object’s size, shape, and material. ... If you connect a wire carrying 3A of current at a 90 degree angle with a wire carrying 4A, and allow the current to flow into a separate wire, … I think that Kirchhoff's junction rule is a bit unclear about the fact that while the … For a given current II, if the electric potential difference \Delta VΔV increases, then the … WebIt depends on the material of the wire. The resistance of the material depends on their temperature. Definition of Resistivity. The resistivity is also known as specific resistance. The resistivity represents the resistance of the material which has specific dimensions, i.e., the material has 1-meter length and 1 square meter area of cross section. drip drop zero sugar
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WebJan 25, 2024 · Ohm’s Law. It states that the potential difference across a wire is directly proportional to the current flowing through the wire when the temperature of the wire is constant. \ ( {\rm {V}}\alpha {\rm {I}}\) The proportionality constant is the resistance, \ (R\) \ (V = IR\) According to Ohm’s law, the potential difference is the product of ... Weba. Resistance does not play an important role in electrical engineering. b. The resistance of wire does not depend on its mineral. c. The resistance of most of the minerals is independent of the temperature. d. The resistance of the conductor is the hindrance by which the conductor opposes the flow of the current. WebA 12-gauge wire is wider than 14-gauge wire and thus has less resistance. The lesser resistance of 12-gauge wire means that it can allow charge to flow through it at a greater rate - that is, allow a larger current. Thus, 12-gauge wire can safely support a circuit that uses an appliance drawing up to 20 Amps of current. dripella mini projector