Task id15424

Let us assume that, using a cathode oscilloscope, we can reproduce for some low-frequency LCR circuit the proportional relationship between the potential difference and the temperature of a specially designed rheostat. In this case, the temperature of the rheostat changes over time in accordance with the heating effect of the sinusoidal current. What will be the relationship between the frequency of this temperature-time relationship and the fluctuations in current measured by the potential difference across the rheostat?