A potential of 120v is applied across the ends of a cylindrical copper

1.	A potential of 120v is applied across the ends of a cylindrical copper rod of length 1cm and radius is 2.0mm. find the value of current through the rod . (The resistivity of copper is 1.7× 10-8 ohm m )
Answer» EXPLANATION: I= V/R R= 1.7×10^-8×1×10^-2/3.14×2×2×10^-6 0.13×10^-4 I= 120/0.13×10^-4 =923×10^4

A potential of 120v is applied across the ends of a cylindrical copper rod of length 1cm and radius is 2.0mm. find the value of current through the rod . (The resistivity of copper is 1.7× 10-8 ohm m )

Answer»

EXPLANATION:

I= V/R

R= 1.7×10^-8×1×10^-2/3.14×2×2×10^-6

0.13×10^-4

I= 120/0.13×10^-4

=923×10^4

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A potential of 120v is applied across the ends of a cylindrical copper rod of length 1cm and radius is 2.0mm. find the value of current through the rod . (The resistivity of copper is 1.7× 10-8 ohm m )

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