When the voltage at both ends of a conductor is 8V, the current passing through it is 0.2A. When the voltage at both ends of a conductor decreases by 2V, how much is the current passing through it and how much is its resistance?

When the voltage at both ends of a conductor is 8V, the current passing through it is 0.2A. When the voltage at both ends of a conductor decreases by 2V, how much is the current passing through it and how much is its resistance?

R = u / I = 8 / 0.2 = 40 Ω
I=U/R=(8-2)/40=6/40=0.15A

When the voltage at both ends of an electric wire is 2V, the current in the conductor is 0.5A. If the voltage at both ends increases to 4V, how much is the current in the conductor? If the voltage increases to 4V, how much is the current in the conductor
When it is less than 1V, what is the exothermic power of this section of heating wire?

Voltage equals current times resistance
Calculate the resistance first
That is, 2 divided by 0.5 equals 4 ohm
The resistance does not change
That's the current
It's 1 an
Power equals u squared divided by R
zero point two five

When the voltage at both ends of a conductor is 2V, the current in the conductor is 0.5A. If the voltage at both ends of the conductor increases to 4V, the current in the conductor is 0.5A____ If the voltage at both ends of the conductor decreases to 0, the resistance of the conductor is_____ (conductor temperature unchanged)

When the voltage at both ends of a conductor is 2V, the current in the conductor is 0.5A. If the voltage at both ends of the conductor increases to 4V, the current in the conductor is 0.5A_ 1A__ If the voltage at both ends of the conductor decreases to 0, the resistance of the conductor is_ 4 Euro____ (conductor temperature unchanged)

When 2V voltage is applied at both ends of a section of conductor, the current intensity passing through it is 0.4A, and the resistance of this section of conductor is 0______ Ω; if there is no voltage at both ends of it, the current intensity through it is______ A. What is the resistance of this section of conductor______ Ω．

According to Ohm's Law: r = UI = 2v0.4a = 5 Ω; when no voltage is applied, there is no current in the circuit, that is, the current is 0; because the resistance of the conductor is determined by the conductor itself, the resistance in the conductor body does not change. So the answer is: 5, 0, 5