Advertisements
Advertisements
Question
An electrical cable of copper has just one wire of radius 9 mm. Its resistance is 5 ohm. This single copper wire of the cable is replaced by 6 different well insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to ______.
Options
7.5 ohm
45 ohm
90 ohm
270 ohm
MCQ
Fill in the Blanks
Solution
An electrical cable of copper has just one wire of radius 9 mm. Its resistance is 5 ohm. This single copper wire of the cable is replaced by 6 different well-insulated copper wires each of radius 3 mm. The total resistance of the cable will now be equal to 7.5 ohm.
shaalaa.com
Temperature Dependence of Resistance
Is there an error in this question or solution?
