Current Electricity

Question: $\sigma_1$ and $\sigma_2$ are the electrical conductivities of Ge and Na respectively. If these substances are heated, then

1) Both $\sigma_1$ and $\sigma_2$ increase

2) $\sigma_1$ increases and $\sigma_2$ decreases

3) $\sigma_1$ decreases and $\sigma_2$ increases

4) Both $\sigma_1$ and $\sigma_2$ decrease

Solution:

Explanation: No Explanation

Electric Conduction Ohm's Law Resistance

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