What length of silver wire with a diameter of 0.050cm is needed to make a resistance of 28 ohm. choose from the answers given.
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What length of silver wire with a diameter of 0.050cm is needed to make a resistance of 28 ohm. choose from the answers given.
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- The resistivity of aluminum is 2.82 X 10* -8 Ω. m. HINT (a) Find the resistance of an aluminum wire (in ohms) with a radius of 1.28 mm and a length of 1.03 m. (b) Calculate the volume (in m) of aluminum in the wire. m3 (c) Suppose that volume of aluminum is formed into a new wire with a length of 2.32 m. Find the new resistance of the wire (in ohms).A copper wire has a resistance of 0.400 2 at 20.0°C, and an iron wire has a resistance of 0.430 at the same temperature. At what temperature (in °C) are their resistances equal? This is all the information given.A battery has an emf of ε = 19 V, an internal resistance r = 28 22, and is connected to a resistor of R = 75 22. Express the current I through the circuit in terms of ε, r and R. Calculate the numerical value of I in A. Express the terminal voltage 4V of the battery in terms of I and R. Calculate the numerical value of 4V in V.
- (a) Of what material is a wire made, if it is 20.0 m long with a 0.110 mm diameter and has a resistance of 33.5 at 20.0°C? copper gold platinum silver (b) What is its resistance (in Q) at 140°C? 47.17A copper wire has a resistance of 0.475 at 20.0°C, and an iron wire has a resistance of 0.495 at the same temperature. At what temperature (in °C) are their resistances equal? Enter a number. °℃A wire of diameter 0.550 mm and length 45.0 m has a measured resistance of 2.80 Ω. What is the resistivity of the wire?