Web: (a) A 34.5m length of copper wire at 20.0°C has a radius of 0.25 mm. If a potential difference of 9.0V is applied across the length of the wire, determine the current in the wire. (b) If the wire is heated to 30.0°C while the 9.0V potential difference is maintained, what is the resulting current in the wire? Resistivity of Cu =1.72×10 −8 WebConductor A is a solid wire…. A: Given: Diameter of conductor wire A = 1.0 mm. Outer Diameter of conductor hollow tube B = 2.0 mm.…. Q: A copper wire of 10 Q and length …
June 20, 2007 PHY 2049 Midterm II solutions - Department …
WebAnswer (1 of 3): The resistance is proportional to the length of the wire and inversely proportional to its cross-sectional area. Half the diameter means one quarter of the area, so this increases the resistance by a factor of 4 (from 1 ÷ (1/4) ). Twice the length means twice the resistance, so t... WebExplanation : Given – Length of first wire (l 1) = L, diameter of first wire (d 1) = D, radius of first wire (r 1) = D/2, length of second wire (l 2) = 4L, diameter of second wire (d 2) = 2D, radius of second wire (r 2) = 2D/2 = D, resistance of first wire = R 1. The property of substance by virtue of which it opposes the flow of current ... bulk upload jira issues
Eight copper wire of length l and diameter d are joined in …
WebMar 1, 2024 · We can find the change in length or longitudinal elongation by the formula: To find a decrease in the diameter of the rod, we need to know the Poisson's ratio (μ) defined as: So, to calculate the change in diameter (ϵ D) we need both μ and longitudinal deformation. From the relation E = 2G (1 + μ) we can calculate Poisson's ratio if we know ... WebA potential difference V is applied across a copper wire of diameter d and length L. when only d is doubled, the drift velocity :- Q. A potential difference V is applied to a copper wire of length l and thickness d . WebSep 2, 2015 · A copper wire of length l and diameter d has potential difference V applied across its two ends. The drift velocity is Vd. If the diameter of the wire is made d / 2, … bulk urine drug tests