The circuit is a simple circuit of R 3, and the resistance in the circuit is the smallest.
According to P=, at this time, the pedal is in the high temperature range, and the electric chair consumes the most power;
P high temperature = =121w
(2) When 2)S 2 is connected to the C contact,
R 3 and smaller resistor R 2 are connected in series in the circuit, and the pedal is in the middle temperature range;
Heat generated by electric chair 10 second: q = w = t = x10s = 880j.