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Is resistivity of a good conductor high or low?
It is Low
Is it true that a material with high resistivity is a good conductor?
No. It is not true. It is false.
How do you convert conductivity to resistivity?
Conductivity is a measure of the ability of a substance to conduct electricity. Resistivity is a measure of how strongly a substance resists the flow of an electric current. So conductivity and resistivity are opposed to each other. A good conductor like copper has a low resistivity, and a good insulator like glass has a low conductivity and a high resistivity. Mathematically, conductivity and resistivity are inverses of each other, so it is quite easy to convert conductivity to resistance.
What kind of material has a high resistivity and prevents the movement of electrons?
An insulator
What change in resistivity if length is doubled?
Resistivity is a property of a substance, and doesn't depend on the dimensions of a sample. If the length of a conductor is doubled, then its resistance doubles but its resistivity doesn't change.
A fuse will melt if the?
A fuse is made with the material which offers high resistivity. When a large amount of electric current passes through the fuse, heat above the melting point of fuse is produced. Hence, the fuse melts.
Do wires that have high resistivity have high conductivity also?
No. In fact it is the opposite. Conductivity is the reciprocal of resistivity so a high resistivity means low conductivity. peace.
Does alumina become conductive at high temperatures?
Alumina is a good electrical insulator; at high temperatures the resistivity is smaller than the resistivity at room temperature.
What is specific resistance and melting point of fuse?
low resistivity and low melting point.
Does the material used for a fuse wire need to have a low or a high melting point - a low or high ductility - a low or high resistivity?
The material for the fuse wire should have low resistance and a low melting point. Ductility is a incidental factor. As the current flow nears the fuse rating, the high current flow causes the wire to heat up quickly. It then melts, opening (breaking) the circuit. This is how the fuse limits the amount of current that can flow through a circuit.
Is resistivity of a good conductor high or low?
It is Low
Why is the resistivity of a potentiometer high?
Because you touch yourself at night.
What property does the metal tungsten on an incandescent light bulb have?
it have high resistivity as well as high melting point. So due to high resistivity collision of moving electrons are taken place. It emits radiation which is appear as light.
What material is used to make a fuse wire?
The material suitable for making a fuse wire should have a low melting pt. so that it can easily melt and cut off the flow of current and save the electrical appliance...
Is metal low conductivity?
No, metals have high conductivity but has low resistivity.
Is it true that a material with high resistivity is a good conductor?
No. It is not true. It is false.
How do you convert conductivity to resistivity?
Conductivity is a measure of the ability of a substance to conduct electricity. Resistivity is a measure of how strongly a substance resists the flow of an electric current. So conductivity and resistivity are opposed to each other. A good conductor like copper has a low resistivity, and a good insulator like glass has a low conductivity and a high resistivity. Mathematically, conductivity and resistivity are inverses of each other, so it is quite easy to convert conductivity to resistance.
