Change of circuit current in parallel resistance If there is a resistor R1 in the circuit with voltage u, the current is I. if there is a resistor R2 in parallel, what is the total current I1 I2 I?

Change of circuit current in parallel resistance If there is a resistor R1 in the circuit with voltage u, the current is I. if there is a resistor R2 in parallel, what is the total current I1 I2 I?

At this time, the voltage is a certain resistance, and the sum is r = (R1 * R2) / (R1 + R2)
Total current I = u / r = u (R1 + R2) / (R1 * R2)
The total current is distributed to R1 and R2
According to I1 * R1 = I2 * R2
I1+I2=I
I1=IR2/(R1+R2)
I2=IR1/(R1+R2)

How does the total resistance change when a parallel circuit changes a resistance

1/R=1/R1+1/R2
No matter R1 or R2 increases (decreases), 1 / R will decrease (increases), that is, the total resistance R increases (decreases)

In parallel circuit, when the resistance of one branch increases, how will the total resistance change? What is the change of current through other branches?

In parallel circuit, the resistance of one branch increases, the total resistance increases, and the current through other branches increases

The change of resistance value of one of the parallel resistors affects the total resistance voltage and current
Such as the title

The total resistance value of parallel resistance increases with the increase of any resistance value in parallel, and decreases with the decrease. The total resistance value can be calculated according to the following formula: (1 / R total) = (1 / R 1) + (1 / R 2) + (1 / R 3) +. Any resistance "increases" (decreases), and "total resistance" also increases (decreases). But the total resistance value is always less than any one of them