Question

Define Resistance. Write its formula and derive its unit from the formula​

Answer 1

Answer:

Resistance is a measure of the opposition to current flow in an electrical circuit.

Formula- R= V/I

Explanation:

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Answer 2

Answer:

Resistance is opposition to flow of current

According to ohm's law

I is directly proportional to V ( I = current , v = Potential difference

I = KV ( k = Constant of proportionality )

I * 1/k = V ( 1/K = R = Resistance of the conductor

I * R = V

Hence V = IR

OR

R = V /I

To find SI Unit

Resistance = Potential difference / Current

Resistance = Volt/ Ampere

Volt / Ampere = Ohm