What is specific resistance or resistivity upon what factors does it depend?
What is specific resistance or resistivity upon what factors does it depend?
The specific resistance of a wire depends on the temperature and on the material that is used in the wire.
When the resistance of copper wire is 0.1 ohm and the radius is 1 mm then the length of the wire is?
When the resistance of copper wire is 0. 1 Ω and the radius is 1 mm, then the length of the wire is (specific resistance of copper is 3.
When the resistance of copper wire is 0.1 Ω and the radius is 1 mm then the length of the wire is specific resistance of copper is 3.14 10 8 ohm m?
When the resistance of copper wire is 0.1Ω and the radius is 1mm, then the length of the wire is (specific resistance of copper is 3.14×10-8ohm×m)…
When the temperature of metallic conductor is increased its resistance?
When the temperature of metallic conductor increases, the velocity of free electrons increases but it also cause increase in amplitude of vibration of metallic atoms which cause some extra resistance in the path of free electron. Hence resistance increases with increase in the temperature.
When the resistance wire is passed through a die?
When a resistance wire is passed through a die the cross-section area decreases by 1%, the change in resistance of the wire is. Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams. A monoatomic ideal is used as the working substance for the carnot cycle shown in the figure ……
How does the resistance of a wire change when the length is decreased?
when you have longer length of wire, the current has to travel more distance, more the distance higher the number of obstacles it faces through its path. Therefore resistance increases with the length. When cross sectional area increases the space of the elctrons to travel increases(simply explained).
When the resistance wire is passed through a die the cross section area decreases by 1% the change in resistance of the wire is 1 1% decrease 2 1% increase 3 2% decrease 4 2% increase?
Answer. Percentage change in resistance = -2 x change in area….
What will happen to resistance of a wire if we increase the area of cross section of wire?
The relationship between resistance and wire length is proportional . The relationship between resistance and the area of the cross section of a wire is inversely proportional .
What happens to resistance if diameter of wire becomes half?
As we know that resistance of a wire is inversely proportional to the square of its diameter. Thus when the diameter of a wire is doubled (made 2 times), its resistance becomes one-fourth (1/4), and if the diameter of a wire is halved (made 1/2), then its resistance becomes four times (4 times).
Is resistance directly proportional to the length of a wire?
The resistance of a wire is directly proportional to its length and inversely proportional to its cross-sectional area. Resistance also depends on the material of the conductor. The resistance of a conductor, or circuit element, generally increases with increasing temperature.
What will be the resistance if length is doubled?
What happens to resistance when length is doubled? From the equation, we understand that resistance is directly proportional to the length of the conductor and inversely proportional to the crossectional area of the conductor. Doubling the length doubles the resistance.