Question

What is resistance
How to find resitance

Answer 1

Resistance is a obstacle

Comes to reduce the flow of current ,

Formula for find resostance is

R=V/I

Answer 2

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The electrical resistance of an object is a measure of its opposition to the flow of electric current. The inverse quantity is electrical conductance, and is the ease with which an electric current passes. Electrical resistance shares some conceptual parallels with the notion of mechanical friction. 

Use these values in Ohm's Law. If you know thetotal current and the voltage across the whole circuit, you can find the total resistance using Ohm's Law: R = V / I. For example, a parallel circuit has a voltage of 9 volts and total current of 3 amps. The total resistance RT = 9 volts / 3 amps = 3 Ω.

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