The two lamps are connected in parallel, the known resistance R1 = 5 ohm, the main circuit current I = 0.5A, the voltage at both ends of R2 U2 = 2V, and the circuit current I = 0.5A The two lamps are connected in parallel, the known resistance R1 = 5 ohm, the driving current I = 0.5A, and the voltage at both ends of R2 U2 = 2V 1. Find the current through R1 2. Current through R2 3. Resistance of R2 It's a process. Thank you

The two lamps are connected in parallel, the known resistance R1 = 5 ohm, the main circuit current I = 0.5A, the voltage at both ends of R2 U2 = 2V, and the circuit current I = 0.5A The two lamps are connected in parallel, the known resistance R1 = 5 ohm, the driving current I = 0.5A, and the voltage at both ends of R2 U2 = 2V 1. Find the current through R1 2. Current through R2 3. Resistance of R2 It's a process. Thank you

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(1) Because it is in parallel.. U1 = U2 = u total = 2V.. set Ohm's law to calculate the current directly: I1 = U1 / R1 = 0.4A
(2) The main current I total = I1 + I2, so I2 = I total - I1 = 0.1A
(3) R2 = U2 / I2 = 20 Ω

Question: two resistors in parallel, R1 = 5 ohm, R2 = 20 ohm, known trunk current is 0.5A, find the voltage at both ends of the circuit and the current through the resistor
According to the meaning of the title, two resistors are connected in parallel, R1 = 5 ohm, R2 = 20 ohm. The current of the main circuit is known to be 0.5A, and the voltage at both ends of the circuit and the current through the resistor are calculated

1/r=1/r1+1/r2=0.2+0.05=0.25 r=4 u=r*i=0.5*4=2v 2/5=0.4i 2/20=0.1i

In the parallel circuit, the resistance values of the two resistors R1 and R2 are 6 and 12 ohm respectively, and the current of one branch is 0.5A?

Total resistance: 1 / r = 1 / R1 + 1 / r2 = 1 / 6 + 1 / 12 = 1 / 4
So, r = 4 (Ω)
If the current I1 of R1 branch is 0.5A, then
U1=I1R1=0.5×6=3（V）
Because it is a parallel circuit, then u = U1 = U2 = 3V
Main circuit current: I = u / r = 3 / 4 = 0.75 (a)
If the current I2 of R2 branch is 0.5A, then
U2=I2R2=0.5×12=6（V）
Because it is a parallel circuit, then u = U1 = U2 = 6V
Main circuit current: I = u / r = 6 / 4 = 1.5 (a)
Therefore, there are two cases in this topic, as calculated above
A: slightly

When the voltage at both ends of a conductor is 10V and the current is 0.5A, the resistance of the conductor is
If the current of the conductor is 1.5A, a voltage of V is needed, and the resistance of the conductor is. If the voltage at both ends of the conductor is 0, the resistance of the conductor is

20Ω 30v 20Ω 20Ω