At what temperature will the resistance of a copper wire becomes three times?
4500C.
Which change will increase the resistance of a copper wire?
material, eg copper, has lower resistance than steel. length – longer wires have greater resistance. thickness – smaller diameter wires have greater resistance. temperature – heating a wire increases its resistance.
How does the resistance of a copper wire change when its length is doubled?
According to the question, the radius of the wire is doubled. Thus, the answer is (B). Note: We found the answer to be one-fourth as per this particular situation. But if the situation was to double the length, then the new resistance becomes four times of the original resistance.
What happens to the resistance if the length of the wire 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.
How will the resistance of a wire change if its diameter is doubled its length remaining the same?
Answer. then resistance of wire will decrease because of diameter its area of cross section will increase. and resistance is inversely proportional to the area of cross section .
How much does the resistance change when the length of the wire is doubled?
Complete answer: So, the new resistance, after doubling the length of the wire, becomes twice of the original resistance. Hence, if the length of a wire is doubled, then its resistance becomes doubled.
How much does resistance change if length of wire is doubled and its cross-sectional area is reduced to half?
Hence Resistance will become 4 times in the new condition, if the area is doubled and length is halved.
How will the reading of voltmeter be affected if the length of the resistance wire is doubled with same thickness?
when the length of the wire is doubled then the ammeter reading decreases..
What is the resistance of a 100m length of round copper wire with a radius of 0.3 mm?
What is the resistance of a 100m length of round copper wire with a radius of 0.3mm? ρ copper=1.724×10−8Ωm.