Question

A rectangular copper strip is 20 cm long, 0.1 cm wide and 0.4 cm thick. Determine the resistance between (i) opposite ends (ii) opposite sides. The resistivity of copper is 1.7 × 10–6 Ω cm​

Answer 1

Answer:

Sorry Bro

Explanation:

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Answer 2

The resistance between (i) opposite ends is $\[8.4\times {{10}^{-6}}\Omega \]$  and resistance between (ii) opposite sides is $\[0.021\times {{10}^{-6}}\Omega \]$

Given:

From the given question,

A rectangular copper strip length ,$l=20cm$

A rectangular copper strip wide, $w=0.1cm$

A rectangular copper strip thickness, $t=0.4cm$

The resistivity of copper ,$\[\rho =1.7\times {{10}^{-6}}\Omega cm\]$

To find:

the resistance between opposite ends and opposite sides.

Explanation:

The Formula we used,$\[R=\frac{\rho l}{A}\]$

where A is the area of rectangular copper strip.

$\[R=\frac{(1.7\times {{10}^{-6}})\times 20}{(0.1\times 0.4)}\]$

$R=\[8.4\times {{10}^{-6}}\Omega \]$

To find the resistance between opposite sides,

$\[R=\frac{(1.7\times {{10}^{-6}})\times 0.1}{(20\times 0.4)}\]$

$R=\[0.021\times {{10}^{-6}}\Omega \]$

Hence, The resistance between opposite ends is  $\[8.4\times {{10}^{-6}}\Omega \]$  and resistance between opposite sides is  $\[0.021\times {{10}^{-6}}\Omega \]$.