A long copper wire has a resistance of 30 Ohms. A second copper wire is a factor of 4 times shorter than the first wire. (It is the same area, however.) If the second wire is connected to a 25 volt battery, what is the current in the wire in amps?
A long copper wire has a resistance of 30 Ohms. A second copper wire is a...
A long copper wire has a resistance of 33 Ohms. A second copper wire is a factor of 5 times shorter than the first wire. (It is the same area, however.) If the second wire is connected to a 24 volt battery, what is the current in the wire in amps?
A cylindrical tungsten wire is 88cm long and has a resistance of 0.12 ohms. Resistivity is 5.6 x 10^-8. The wire is connected between the terminals of 0.50V battery which drives a current through the wire A) what or the radius B) what is the current being driven by battery
the resistance of a wire is 25 ohms. another wire of the same material and same temperature has a diameter twice as great and length six times as great. find resistance of the second wire? answer is 16.67 ohms solution please
A long copper wire is used to transmit a current from one side of the campus to another as part of a scientific experiment to measure the speed of sound. The wire has a cross sectional area of 2.5*10^-6 m^2 and a total resistance of 7.2 ohms. A voltage of 25 V is applied across the length of the wire. The resistivity of copper is 1.68*10^-8 ohms m. How long is the wire? What is the current flowing through the...
A thick copper wire 2.3 m long is connected in series to a thin high-resistance Nichrome wire. In the steady state, the conventional current in the thick copper wire is 4 amperes. In this copper wire there are 8 � 1028 mobile electrons per cubic meter and the electron mobility is 4.5 � 10?3 (m/s)/(V/m). The cross-sectional area of the copper wire is 6 � 10?7 m2. The thin high-resistance Nichrome wire (which is connected in series to the thick...
If a lamp has a resistance of 25 ohms, what must the resistance of a second lamp, which is connected in parallel to the first, be for the total resistance to be 18.75 ohms?
a piece of copper wire of resistance R is cut into 10 equal lengths. These parts are connected in parallel. How does the joint resistance of the parallel combination compare with the original resistance of the single wire? The circuits, P and Q, show two different ammeter-voltmeter methods of measuring resistance. Suppose the ammeter has a resistance of 0.10 ohms and the voltmeter of 3.0 ohms; the ammeter reads 2.5 amps and the voltmeter reads 6.0 volts. What is the...
A certain wire has a resistance of 140 Ω. What is the resistance of a second wire, made of the same material, that is 1/3 as long and has 1/5 the diameter? (answer in ohms)
A copper wire has a resistance of 9.00 ohms at 33.0 degrees. Determine the resistance (in ohm) at 433 degrees celsius. The temperature coefficient of resistivity for copper wire is 3.90*10^-3 degrees celsius to the negative one power. (Assume that the temperarure coefficient of resistivity was measured using the reference temperature 20 degrees celsius.)
A length of AWG #12 copper wire has a resistance of 0.020 Ohms at 20 °C. Calculate the temperature for which the resistance is 0.023 Ohms.