Science, asked by sadhunirali611, 3 months ago

Two wires are made of the same material and
have the same length but different radii. They
are joined end-to-end and a potential
difference is maintained across the
combination, which of the following quantity
that is the same for both wires is
A
potential difference
B
electric current
С
current density
electric field
D​

Answers

Answered by ashasingh5845
7

Answer:

A is the answer of that question

Answered by sushmadhkl
2

The potential difference (p.d or V) is the same for both wires.

P.d is the amount of work done to bring about 1 coulomb charge from one point to another point of the electric field. Its SI unit is volt (v) and calculated as,

V=W/Q

                   where W is work done and Q is the electric charge

Also, the potential difference (V) can be defined in terms of resistance as the potential difference across a conductor when 1 ampere current produces 1 ohm resistance in a conductor.

Mathematically,

V=IR

From the above, it can be concluded as the potential difference is directly proportional to the resistance if the electric current is constant (V∝R).

Furthermore, the resistance produced in a conducting wire is directly proportional to its length for constant temperature (R∝l).

Therefore, if two wires are made of the same material and have the same length but different radii, the potential difference will be the same for both wires.

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