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An electric current is passed through a ...

An electric current is passed through a circuit containing two wires of the same material connected in parallel. If the lengths and radii of the wire are in the ratio `(4)/(3)` and `(2)/(3)`, then the ratio of the currents passing through the wires will be

A

3

B

`1//3`

C

`8//9`

D

`9//8`

Text Solution

AI Generated Solution

To solve the problem of finding the ratio of currents passing through two wires connected in parallel, we will follow these steps: ### Step 1: Understand the relationship between resistance and dimensions The resistance \( R \) of a wire is given by the formula: \[ R = \frac{\rho L}{A} \] where \( \rho \) is the resistivity (which is constant since both wires are made of the same material), \( L \) is the length of the wire, and \( A \) is the cross-sectional area. The area \( A \) can be expressed in terms of the radius \( r \) as: ...
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