Question 581: Current Electricity

Question

For a metallic wire, the ratio of voltage to corresponding current is

Accepted Answer

According to Ohm's law, the ratio of voltage to the corresponding current is represented as resistance, which can be expressed by the formula:
$$\frac{V}{I} = R \, (	ext{resistance})$$
For a metallic wire, as the temperature increases, the resistance increases as well. This is due to the increased thermal motion of electrons within the wire, which causes more frequent collisions and impedes the flow of current.

Answer

independent of temperature.

Answer

increases with rise in temperature.

Answer

increases or decreases with rise in temperature depending upon the metal.

Answer

decreases with rise in temperature.

Current Electricity

For a metallic wire, the ratio of voltage to corresponding current is

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