Two rods are joined end to end, as shown. Both have a cross‐ sectional area of 
. Each is1 meter long. One rod is of copper with a resistivity of 
ohm‐centimeter, the other is of iron with a resistivity of 
ohm‐centimeter. How much voltage is required to produce a current of 1 ampere in the rods?
Text Solution
Verified by ExpertsD
Here, Length of each rod, 
Area of cross‐section of each rod,
Resistivity of copper rod,
Resistivity of iron rod,
Resistance of copper rod,
and resistance of iron rod,
As copper and iron rods are connected in series, therefore
equivalent resistance is
Voltage required to produce 1 A current in the rods is
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems