What is the obstruction offered to the flow of current inside a conductor called?
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → Resistance
By Ohm’s law, \( V=RI \), where \( R \) is the resistance of the conductor. For a given potential difference the current is \( I=V/R \). So a larger resistance allows a smaller current. The resistance measures how much the conductor opposes the flow of current. Its SI unit is the ohm (\( \Omega \)).