What is meant by resistance of a conductor state how resistance of a c

1.	What is meant by resistance of a conductor state how resistance of a conductor is effected whena. a low current passes through ot for a short duration b .. a heavy current passes through about 30 seconds
Answer» Answer: RESISTANCE is defined as the opposition to the flow of electrical current through a conductor. It's important to point out that conductivity and resistivity (the property that determines final resistance) are inversely proportional. Explanation: Let new length = l' new Area =, A' and new resistance = R' GIVEN, l' = 2l and A' = A/2 As we know R = (ρl) / A So, R' = [ρ × 2l] / (A/2) = (4 × ρl) / A = 4 × (ρ l / A ) but R = ρl/A ⇒ R' = 4 ×R Resitivity depends on the nature of material not on the length, TEMPERATURE or Area of cross-section. So, resitivity will remain Constant.

What is meant by resistance of a conductor state how resistance of a conductor is effected whena. a low current passes through ot for a short duration b .. a heavy current passes through about 30 seconds

Answer»

Answer:

RESISTANCE is defined as the opposition to the flow of electrical current through a conductor. It's important to point out that conductivity and resistivity (the property that determines final resistance) are inversely proportional.

Explanation:

Let new length = l' new Area =, A' and new resistance = R' GIVEN, l' = 2l and A' = A/2 As we know R = (ρl) / A So, R' = [ρ × 2l] / (A/2) = (4 × ρl) / A = 4 × (ρ l / A ) but R = ρl/A ⇒ R' = 4 ×R Resitivity depends on the nature of material not on the length, TEMPERATURE or Area of cross-section. So, resitivity will remain Constant.

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