Question: in parallel circuit, if the total resistance is increased by sliding rheostat, what is the change of each parallel resistance and branch current,

Question: in parallel circuit, if the total resistance is increased by sliding rheostat, what is the change of each parallel resistance and branch current,

According to Ohm's law, the resistance has nothing to do with the voltage, only with the temperature and the length of the cross-sectional area of the material, while the current is inversely proportional to the resistance. As the resistance increases, the current decreases

On the change of total resistance with a single resistance in parallel circuit
When the residential electricity consumption increases, there will be more electrical appliances connected to the circuit. Because electrical appliances are connected in parallel, the total resistance of the circuit will decrease
In parallel circuit, if the resistance of one of the resistors increases, the total resistance also increases
These two sentences are right, but they are contradictory! Kind people help to solve the problem

If the resistance value of one of the resistors increases, the total resistance also increases. That is to say, the resistance of the original resistor increases, that is, the total resistance increases by 1 / r = 1 / R 1 + 1 / R 2. Analysis shows that R1 increases, 1 / R 1 decreases, 1 / R 1 decreases, R increases