Physics, 24.07.2020 21:01 kadeWayne

While having a discussion, Technician A says that the longer a conductor is, the more resistance it has and the smaller its diameter, the less resistance it has. Technician B says that the larger its diameter, the less resistance it has. Who is correct

Answers: 3

Show answers

Answers

Answer from: lizzy4858

Technician B is correct by saying that the larger diameter (i.e the conductor's diameter), the less resistance it has.

Explanation:

According to the law of electrical resistance, the resistance of a metallic conductor is proportional to the length of the conductor, but inversely proportional to the cross-sectional area of the conductor.

$R = p\frac{l}{A}$

where R is the resistance of the conductor.

p is the intrinsic resistivity of the material with which the conductor is made.

l is the length of the conductor.

A is the cross-sectional area of the conductor.

This law simply means that if we increase the length of a conductor, or reduce the area, the electrical resistance of the conductor will increase, and vice versa.

Technician B is correct by saying that the larger diameter (i.e the conductor's diameter), the less resistance it has.

This is because the area of the conductor is proportional to the cross-sectional area. And the larger the cross-sectional area of a conductor, the lesser its resistance will be.

Answer from: Quest

The answer is c hope this

Answer from: Quest

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

Another question on Physics

Physics, 22.06.2019 01:30

The speed of light in a material is 0.50 c. what is the critical angle of a light ray at the interface between the material and a vacuum?

Answers: 1

Answer

Physics, 22.06.2019 05:30

Anybody wanna ? (picture included? )

Answers: 1

Answer

Physics, 22.06.2019 10:40

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.

Answers: 1

Answer

Physics, 22.06.2019 13:20

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.

Answers: 1

Answer

You know the right answer?

While having a discussion, Technician A says that the longer a conductor is, the more resistance it...

Questions