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Alekssandra [29.7K]
3 years ago
15

Resistance and resistivity are related by a:

Physics
1 answer:
Dimas [21]3 years ago
7 0

Answer:

<u>At a given temperature</u>

Resistivity depends only on the material and resistance depends on resisitvity, length of the wire and cross-sectional area of the wire

Explanation:

At a given temperature the resistance of a specimen with unit length and unit cross sectional area is called resisitivity.

We get

        R = ρl/A

where; R = resistance

            ρ = resistivity

            l = length of the wire

            A = cross-sectional area of the wire

So you get, ρ ∝ 1\l

                   ρ ∝ A

                   ρ ∝ R

                   

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Explanation:

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A boy whirls a stone in a horizontal circle of radius 1.4 m and at height 1.5 m above ground level. The string breaks, and the s
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Answer:233.23 m/s^2

Explanation:

Given

radius of circle=1.4 m

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6 0
3 years ago
If a system has 475 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in int
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First, we convert kcal to joules:
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4 0
3 years ago
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Two point charges, Q1 and Q2, are separated by a distance R. If the magnitudes of both charges are tripled and their separation
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Answer:

Remains the same

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