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The property of a substance which oppose the flow of current is known as
1. conductance
2. reluctance
3. resistance
4. admittance

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Correct Answer - Option 3 : resistance

Resistance:

  • The property of any conductor that opposes the flow of electric current through it is called resistance.
  • It is denoted by R and the SI unit is the ohm (Ω).
  • The resistance of a metallic wire is directly proportional to its length and inversely proportional to its area of cross-section.

 

The resistance (R) is given by:

R = ρL / A

where ρ is resistivity, L is the length and A is the area of the cross-section.

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