The conductor current is zero, and the conductor resistance is also zero

Of course not. The resistance of a conductor is fixed and does not change depending on the magnitude of the current or voltage.

No, the resistance of a conductor is certain, and as mentioned above, resistance is a property of matter, just as mass is a property of matter. If there is something with zero resistance, the current will be infinite instead of zero when the electricity is applied.

Of course not. The resistivity of a conductor is fixed and independent of the current.

The resistance of a conductor is determined by its physical properties, which may vary depending on the magnitude of the current or voltage (for example, the resistance of the electric furnace wire is very small when it is cold, the resistance in the hot state is much larger, and there is also a voltage regulator).However, the resistance does not become zero because there is no current or voltage, and even the resistance of a superconductor can only be close to zero. Moreover, in the absence of current and voltage, there is no point in talking about resistance.

Wrong. The resistance of a conductor is determined by the material and the cross-section. It doesn't matter if there's electricity in it. It is the resistance that determines the current, not the current that determines the resistance.

Just as the thickness of a water pipe determines the flow of water. Even if the faucet is turned off tightly, there is no water flow. 2-inch water hose is still 2-inch. It is impossible to say that the water is gone when the pipes are turned off :)

In addition, there is an obvious mistake in your title: even if the current determines the resistance, then it should be "the conductor current is zero, and the conductor resistance is infinity", right?

No, resistance is a property.

No, the conduction resistance does not change.

No, the resistance is only related to the nature of the conductor, its length, cross-sectional area, and temperature, but not whether it is current.

a The heat generated by the resistance wire is q=i2

rt=（5a）2

44 60s=66000j, so a is incorrect;

b The electrical energy consumed by the conductor w=uit=uc=6v 2c=12j, so b is correct;

c The power of the bulb when it glows normally is p = 40w = , and the power consumed by the normal operation for 5 hours is w = pt =, so c is correct;

d because the total impulse resistance in the circuit is less than any one of the sub-resistors, then the total resistance of the two resistors in parallel is 3, the resistance value of the two sub-resistors is greater than 3, according to the total resistance in the series circuit is equal to the sum of the sub-resistances, the total resistance of the two parts of the resistance is greater than 6 when the two parts of the resistance are connected in series, so d is correct

So choose A

1. False: Resistivity multiplied by length divided by cross-sectional area is resistance, so resistivity is not necessarily large.

2. False: Current is the voltage divided by the resistance, but for a conductor, its resistance is fixed, and it cannot be said to be inversely proportional to it.

3 pairs of Kirchhoff's first law.

The first law, also known as Kirchhoff's current law, abbreviated as KCL, is the embodiment of the continuity of the current on the lumped parameter circuit, and its physical background is the axiom of conservation of charge. Kirchhoff's law of hidden currents is the law that determines the relationship between the currents of each branch at any node in the rolling hall, so it is also called the law of nodal currents, and its content is: at any instant, the sum of the currents flowing to a certain node is always equal to the sum of the currents flowing out of the node.

The heat generated by the current through the rolling base resistor: Q=I2RT=(大約2

10ω×10s=4j．

So the answer is: 4

According to Ohm's law.

The deformation formula r= calculates the resistance value, and then determines the resistance value when the conductor voltage is 0 according to the factors affecting the resistance size, that is, the resistance is related to the length, material and cross-sectional area of the conductor, and has nothing to do with the voltage at both ends [Analysis] When the voltage at both ends of the conductor is 6V, the resistance of the conductor is: ; Because the resistance of the conductor is not related to the voltage at both ends of the conductor, when the voltage at both ends of the conductor is 0, the resistance value is still 60 So the answer is: 60 Hu Lupei.

The resistance of the conductor is determined by the material, length and cross-sectional area of the conductor, and is also related to the temperature of the conductor, and has nothing to do with the voltage applied at both ends of it and the current passing through, so whether the voltage is added at both ends of the conductor or not, whether there is current in the conductor, the resistance of the conductor is certain Therefore, options a, b, and c are all wrong, and only option d is correct

So choose D

The resistance of the conductor is determined by the material, length and cross-sectional area of the conductor, and is also related to the temperature of the conductor, and has nothing to do with the voltage applied at both ends of it and the current passing through, so whether the voltage is added at both ends of the conductor or not, whether there is current in the conductor, the resistance of the conductor is certain Therefore, options a, b, and c are all wrong, and only option d is correct

So choose D

The correct statement is: cWhen the voltage across the conductor is zero, the current is zero, but the resistance is not.

Because as long as the conductor is certain, its resistance is certain, and it does not change with the change of current or voltage. So, C is correct.

I can't answer if I can't tell it!