The resistivity of manganese wire of length one metre is 1.84 × 10 ^ - 6 ohm metre at 20 degree Celsius if the diameter of the wire is 3 × 10 ^ - 4 metre what will be the resistance of the wire at the temperature
Answers
Answered by
3
Answer:
To calculate the resistance R of a wire, we need to know three things:
its length – the longer the wire, the greater its resistance.
its cross-sectional area A – the greater the area, the less its resistance.
the resistivity of the material r – the greater the resistivity, the greater its resistance
Similar questions