3 years ago

Explain why is not advisable to use small values of I in performing an experiment on refraction through a glass prism?

Physics

1 answer:

MakcuM [25]3 years ago

3 0

The angle of refraction would be further less

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A cylindrical rod of length L is connected across a fixed potential difference, creating a current I through the rod. What would

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The value of current through the rod becomes half

$i' = \frac{i}{2}$

Explanation:

As per Ohm's law we know that the current through a resistor is given as

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here we know that

$R = \rho \frac{L}{A}$

here we know that the length of the cylinder is L and area is A so the value of current through the rod is given as

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now we have change the length of the conductor to twice of initial value and rest all parameters will remain the same

so we will have

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now from above two equations we have

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so new current will become

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3 years ago