The resistance of a 2m length cable is 2.5 ohms. Determine the resistance of a 7m length of the same cable
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- The resistance of a 2m length of cable is 2.5 . Determine (a) the resistance of a 7m length of the same cable and (b)the length of the same wire when the resistance is 6.250.What is factor of a cable at 5 degrees celcius when calculating resistance4. You have two cylindrical conductors each one meter long. One is made of aluminum with a radius of Imm and a resistivity of 2.8x10*Qm. The second is made of copper with resistivity of 1.7x10-*Qm and unknown radius. a) What is the resistance of the aluminum cylinder? b) If you connect the copper cylinder in series to the aluminum cylinder and both to a 10 V battery, the current measured is 10A. What is the radius of the copper cylinder?
- The diameter of wire A is greater than the diameter of wire B, but their lengths and resistivities are identical. For a given voltage difference across the ends, what is the relationship between PA and PB, the dissipated power for wires A and B, respectively?A given wire has a resistance of 17-5 ohms. If its length is 560m, how much length must be cut-off from the wire in order to reduce its resistance to 12.5 ohms.A 20 meter length of cable has a cross-sectional area of 1mm2 and a resistanceof 5 ohms. Calculate the conductivity of the cable in MS/m
- 7. The conductance of a certain wire is 0.5S. Another wire of the same material and at the same temperature has a diameter twice as great and a length three times as great. What is the conductance of the second wire?What is the relationship between the Arc Resistance and the Area of the Cross-Section of the Arc? A. Inversely Proportional B. Does not affect each other C. Proportional D. Equal1. What is the relationship of voltage and current (concerning phase angle) in a pure resistive circuit?
- Two wires A and B made from two different materials have temperature coefficient of resistance equal to 0.0025 and 0.0005 ohm per degree Celsius, respectively. It is desired to make a coil of wire having a resistance of 1200 ohms with a temperature coefficient of 0.001, using suitable lengths of the two given wires connected in series. Determine the required length of wire A.3.- For the following circuit, determine the following:(a) Currents in each branch. b) Potential differences between each branch (from junction to junction). c) Electric potentials in each junction with respect to groundA 1600m long copper cable is made up of 7 wires each having a diameter of 1.7mm. Calculate the resistance of the cable if the specific resistance of copper is 1.75 x 10e-8 ohm – m.