Question

what is electrical resistance?​

Answer 1

Answer- The above question is from the chapter 'Electricity'.

Given question: What is electrical resistance?​

Answer: Electrical Resistance- It is the property of a conductor, semi-conductor or insulator to resist the flow of charges.

R = V/I

where R = Potential difference between two end points and I = flow of current.

Resistance is generally measured in Ohms. (Ω)

R = $\dfrac{\rho \: * \: l}{A}$

where ρ = resistivity, l = length of material and A = area of material.

R ∝ l

R ∝ ρ

R ∝ 1/A

Resistors can be connected in basically 2 ways:

1. Series Combination

2. Parallel Combination

Answer 2

QUESTION -

what is electrical resistance?

ANSWER -

Definition :-

Resistance is a measure of the opposition that a circuit (or an electrical element) offers to the flow of electric current.

✔️ Resistance is dependent on the length and area of cross-section of the conductor.

It is measured in Ohms, Ω.

Noteworthy point :- Resistance of a conductor changes with temperature.