Question

Resistance dimensional formula​

Answer 1

Answer:

The SI unit of electrical resistivity is the ohm⋅metre (Ω⋅m). It is commonly represented by the Greek letter ρ, rho. where, R= resistance, A= area of cross-section, l= length *provided the material has Uniform geometrical dimensions. Original Formula: R= ρ(l/A), where ρ is a proportionality constant..

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Answer 2

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ANSWER ==√

Resistance:

The opposition to the flow of electric current is called resistance. It is represented by "R" and its unit is Ohm Ω

Resistance is given by the formula:

Resistance is given by the formula:R = V / I ........... (1)

where V is the voltage measured in volts 'V' and I is the current measured in amperes 'A'

where V is the voltage measured in volts 'V' and I is the current measured in amperes 'A'We have to find the dimensional formula of resistance.

Since we know that,

Dimensional formula for V = M L² T ⁻³ A⁻¹

Dimensional formula for I = A

Put these values in equation (1), we get:

Dimensional formula for R = M L² T ⁻³ A⁻¹ / A

Dimensional formula for R = M L² T ⁻³ A⁻²

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