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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.
Optical power of a concave lens is?
negetive
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 is resistivity and what factor does it depend?
Electrical resistivity (also known as resistivity, specific electrical resistance, or volume resistivity) quantifies how strongly a given material opposes the flow of electric current. A low resistivity indicates a material that readily allows the movement of electric charge. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is theohm⋅metre (Ω⋅m)It defined as resistance offerde by a unit length and cross section area conductor.It depends on material used.it depends on relexation time and temperature.
If a wire of resistivity is stretched to thrice its initial length what will be its new resistivity?
the resistivity will increase by nine times
What does a negetive and a negetive make?
It makes a positive.
What is negetive 3 minus negetive 2?
negative1
Why minus times plus equals minus?
If you have negetive 7 and you multiply it by 3 you are just adding negetive 7 three times so it remains negetive
How do you drop voltage in parallel circuit?
it does not meet,positive goes to positive and negetive to negetive.
What is negetive 82 over 5 asa a decimal?
It is -16.4 and the word is negative, not negetive.
What does negetive 16 minus negetive 16 equal?
-16 minus -16 is 0.
What is the resistivity of graphite?
The resistivity of graphite is 7.837 µΩm.
What does negetive 3 sutract negetive 3 equal?
Clever! If you subtract the amount you have from what you have, you always wind up with zero.
What is thermal resistivity of soils?
Resistivity is the opposite of conductivity. The thermal resistivity of soil is the degree to which soil impedes the flow of heat, or insulates against heat.
Gamma is positive or negetive?
neutral
Do neutrons have a negetive charge?
no and they are neutral
Part of a atom with negetive?
electron
