Which statement best describes resistance? resistance is how well a current will flow in a material and is measured in volts. how well a material conducts an electrical charge and is measured in ohms. the ability of a material to attract a positive charge to create a current. the ability of a material to repel neutral charges and is measured in ohms.

Option (d) is the correct answer.

Explanation:

Resistance is defined as the ability of a substance to resist the slow of electrons or charges through it.

This means that a resistance is the measure to see how difficultly a charge is flowing through a material. Resistance is represented by R and it's S.I unit is ohms.

According to ohms law, electric current is proportional to voltage and inversely proportional to resistance.

Mathematically,     V = IR

where,    V = voltage

               I = current

               R = resistance

Thus, we can conclude that the statement ability of a material to repel neutral charges and is measured in ohms, best describes resistance.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.