The resistance of 120 mtrs. of wire is 12Ω. What is its conductance?
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Q: 7. The resistance of 120 mtrs. of wire is 120. What is its conductance?
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The resistance of 120 mtrs. of wire is 12Ω. What is its conductance?
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- The resistance of a length of copper wire is 3.60 ohms at 20oC. At what temperature will the resistance be 5 ohms. Take temperature coefficient for copper at 20oC 0.00393/oC.Determine the resistance of a bus bar made of copper if the length is 10 meters long and the cross section is a 4 x 4 cm2. Use 1.7241 micro ohm-cm as the resistivity in ohm.A copper wire has a resistance of 2.4 ohms at 20-deg. Find its resistance at 75-deg. Resistance temperature coefficient at 20-degC is 0.034/degC. 3.78 ohms 6.89 ohms 12.18 ohms 7.48 ohms
- Some copper wire has a resistance of 200 at 20 ° C . A current is passed through the wire and the temperature rises to 90 ° C . Determine the resistance of the wire at 90 ° C , correct to the nearest ohm , assuming that the temperature coefficient of resistance is 0.004 / C at 0 ° CThe temperature coefficient of resistivity of carbon is -0.0005/C°. If the resistor is made of graphite has a resistance of 5 kΩ at 20°, find the resistance at 27°.A copper wire has a resistance of 0.85 ohm at 200C. What will be its resistance at 400C ? Temperature coefficient of resistance of copper at 00C is 0.004/0C.
- Two wires A & B made from two different materials have temperature coefficient of resistance equal to 0.0025 and 0.0005 ohm per C , respectively . It is desired to make a coil of wire having a resistance of 1200ohms 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 ?Determine the resistance of a busbar made of copper if the length is 16 meters long and the cross area is a 5x5 sq. cm. Use 1.7241 micro ohm-cm as the resistivity. (Provide drawing or FBD)1- If we use 5000 μF, we can get a very low ripple voltage. But this is so bad and this a disadvantage, why? 2- What happens if we use a very small resistance (few Ohms) or big resistance (100 kOhms) ?
- The resistance of a copper wire is 125 ohms at 100°C. Determine the resistance at 70°C Note: DRAW THE DIAGRAMThe resistance of a copper wire is 125 ohms at 100°C. Determine the resistance at 70°CAn copper wire has a total length of 2820 inches (in.) and a cross-sectional area of 4in. by6 in. Find the resistance of the wire.