Is the resistance of a certain copper wire is 1 ohm then the resistance of a similar Nichrome wire will be about?
l/a=R/ρ = 1/(1.68E-8) / meter. =77.381 ohms. Therefore, the required resistance of Nichrome wire is 77.381 ohms.
Does Nichrome have high resistance?
Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures. When used as a heating element, it is usually wound into coils.
Why Nichrome wire has more resistance than copper wire?
melting point for a nichrome wire is greater than copper wire, so that the resistance at nichrome wire will be greater than copper wire. Therefore, the electric current can flow (maximum flow) on the nichrome wire will be smaller than the copper wire.
Why does Nichrome have more resistance than copper?
Nichrome wire because it has higher resistivity than Cooper wire and resistance will be more than heat produce will also be more. Nichrome offers higher resistance than copper. Therefore answer is Nichrome will heat-up faster.
Does Nichrome produce more heat than copper?
Among the two wires having similar length and radius, Nichrome wire gets heated up more as compared wire since resistivity of Nichrome is more than that of Copper. Also, Nichrome wire is a good conductor of current and have very less resistance, so it will heat sooner as compared to Copper.
Which wire gets heated up more Nichrome or copper?
Nichrome wire gets heated up more. So more the resistance of a wire, more will be heat generated in it. Hence, we can say nichrome wire gets more heated up as compared to the copper wire.
Which has more resistance Nichrome or copper?
Suppose,we have two wires of equal length and the same cross sectional,one made up of nichrome and the other made up of copper metal. Then, nichrome wire will have more resistance than the copper wire.
What happens when Nichrome is replaced by copper?
If the heating elements of electric iron made of nichrome will be replaced by copper then the current will not be converted into heat because it will offer very low resistance and hence, will not glow. Secondly its melting point is also low as compared with nichrome.