A copper wire has diameter 0.5 mm and resistivity of 1.6 x 10^-8 ohm m.
What will be the length of this wire to make its resistance to 10 ohm.
How much does the resistance change if the diameter is doubled?
Answers
Answered by
3
Answer:
Step-by-step explanation: Here, R is the resistance of the wire, ρ is the resistivity, l is the length and A is the area. Therefore, the length of the wire to make the resistance 10 ohm is 122 m.
Similar questions