State ohms law. Draw a graph between voltage and current for a metallic conductor. What is the effect of temperature on the resistivity of metals
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Ohm's law:
According to the Ohm's law the current flowing through a metallic conductor is directly proportional to the potential difference across the ends provided the temperature remains constant.
V = IR
V = Potential difference
I = Current
R = Resistance
The graph between the voltage and current is a straight line which passes through the origin
With increase in the temperature, the resistivity increases in case of metals
According to the Ohm's law the current flowing through a metallic conductor is directly proportional to the potential difference across the ends provided the temperature remains constant.
V = IR
V = Potential difference
I = Current
R = Resistance
The graph between the voltage and current is a straight line which passes through the origin
With increase in the temperature, the resistivity increases in case of metals
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