JAMB - Physics (1981 - No. 42)
If I is the current passing through a metallic resistor and H is the rate of Heat generated in the resistor at a constant temperature, then
H \(\alpha\) \(\frac{1}{I}\)
H \(\alpha\) \(\frac{1}{I^2}\)
H \(\alpha\) \(\sqrt1\)
H \(\alpha\) I2
none of the above
解释
H \(\alpha\) I2RT