As shown in the figure is the electric circuit diagram of the electric rice cooker when heating and holding. The power is 1100W when heating and 100W when holding. (1) electric rice cooker As shown in the figure is the electric circuit diagram of the electric rice cooker when heating and holding. The power is 1100W when heating and 100W when holding (1) When the electric cooker is in the heating state, is the switch s open or closed? (2) R2 and R1 resistance (process! (3) How much electricity is consumed by heating for 5 minutes?

As shown in the figure is the electric circuit diagram of the electric rice cooker when heating and holding. The power is 1100W when heating and 100W when holding. (1) electric rice cooker As shown in the figure is the electric circuit diagram of the electric rice cooker when heating and holding. The power is 1100W when heating and 100W when holding (1) When the electric cooker is in the heating state, is the switch s open or closed? (2) R2 and R1 resistance (process! (3) How much electricity is consumed by heating for 5 minutes?

(1) When the electric cooker is in the heating state, the switch S is closed, short circuit to R2 when heating (2) from P = u ^ 2 / R, R1 = u ^ 2 / P1 = 48400 / 1100 = 44 ohm (R1 + R2) = u ^ 2 / P2 = 48400 / 100 = 484 ohm

What is the voltage of domestic circuit in China? What is the connection mode of TV, rice cooker and other household appliances

The voltage of domestic circuit in our country is 220 V AC, 0.22 kV. TV sets use single-phase electricity, fire and 0. Other household appliances use single-phase electricity, and the connection mode uses electric fire wire, 0 wire and skin grounding