Electrostatics

In a complete circular orbit of an electron around a nucleus, the work done by the field of the nucleus is zero. This is because the force is always perpendicular to the direction of motion, so there is no displacement along the direction of the force, resulting in no work done. If the orbit is elliptical, there would be work done by the field of the nucleus due to the non-zero component of the force parallel to the direction of motion during the orbital motion.

This process is known as electrostatic induction. Essentially, a charged object (such as a balloon rubbed on a sweater) is brought close to the neutral object, causing the charges in the neutral object to rearrange (induce) creating a temporary charge separation. When a path to ground is provided (e.g. touching the neutral object), the excess charges flow to or from the ground, leaving the object with a net charge.

This process is known as induction. It occurs when the electric field of one object causes charges to separate in a nearby object without direct contact, resulting in the transfer of electrons from one part of the second object to another.

The negative rod will repel electrons within the spheres, causing electrons to move away from the region near the rod and towards the opposite side, leaving a net positive charge near the rod. This creates a redistribution of charge on the spheres, attracting them towards the negatively charged rod until they reach equilibrium.

When the object is charged, the paint particles are charged as well, which causes them to be attracted to the object due to the opposite charges. This attraction leads to better adhesion of the paint particles to the object, resulting in less overspray and waste compared to when the object is not charged.

Most of the time, in an object, its negative and positive charges are balanced, which makes it a neutrally-charged object. Sometimes, when some objects come into contact with other things, they gather more charges of one type. If there are more electrons, they are negatively-charged. If there are more protons, they are positively-charged. Because opposites attract, an object which is negatively-charged will attract another object which is positively-charged and vice versa.

Because Copper is a conductor and conductors do not hold electricity.

The charge flows out.

But, A copper rod can be charged if it is in a rubber handle.

This will result in the charge staying in the rod, thus charging it.

Cönsider a negatively charged object be placed at a fixed position ,now a neutral or uncharged object is slowly introducing into the field which is produced by the electrons in negatively charged object.... And now according to the law of charges opposite charges attract each other similar thing taking place here the electrons present on the negatively charged object attracts the positive charge in neutral object by separting the charges inside the object wich is called induction as soon as the neutral object enters into the field produce by negatively charged object ...,and then it attracts...

Static charges can build up on objects when two materials rub against each other, causing electrons to be transferred between them. This friction creates an imbalance of positive and negative charges on the surfaces of the materials, leading to the build-up of static electricity.

Equipotential lines in an electric field are imaginary lines that connect points having the same electric potential. Along these lines, no work is required to move a charge between the points, as the electric potential is the same. Equipotential lines are always perpendicular to electric field lines.

Yes, bamboo can conduct electricity due to the presence of water and minerals in its cells. However, it is not as efficient a conductor as metals like copper or aluminum.

Photo Copy machines use static electricity to get the ink in the places where it needs to be copied.

There's an artist that uses static electricity to fly the different paint onto the paper.

They also use static electricity to paint cars.

(True enough, I got the artist thing from Bill Nye The Science Guy)

When two objects have the same type of electric charge (positive or negative), they repel each other due to the electrostatic force. This repulsion occurs as like charges repel each other according to Coulomb's law, which states that the force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.

Least count of voltmeter is the value of one division on the scale.

Formula is: Least count = Range/No. of divisions

For example, if a voltmeter can measure from 0 to 40 V, and it has 100 divisions in total on the scale, then its least count is 40/100 = 0.4V

Not necessarily. An object can be neutral if it has an equal amount of positive and negative charges, canceling each other out. However, an object with no static electricity might still have an imbalance of charges and not necessarily be neutral.

Balloons cling to a wall due to static electricity. When rubbed against a surface, the balloon becomes charged and attracts the opposite charge on the wall, causing it to stick.

When a charged body touches the gold leaf electroscope, electrons are transferred between the body and the electroscope. This causes the leaves to have the same charge and repel each other due to the like charges, causing them to move apart. The increased separation distance between the leaves makes them appear to expand.

Materials that can be statically charged can be either conductors or insulators. Conductors allow electricity to flow through them easily, which can lead to static charging under certain conditions. Insulators, on the other hand, do not conduct electricity well and can also become statically charged due to the buildup of excess charge.

Yes, that's what it means. No force would be required to keep a test point-charge

moving along a line of zero potential in the direction toward that point, and there

would be no force attracting it toward that point in the combined field. Of course

that's physically impossible in the real world, probably because there's no such

thing as a point charge. The smallest possible test-charge would still have some

non-zero physical dimensions, and be made of atoms whose charge distribution

inside it is non-uniform. So it could never stay exactly on the line, and any slight

perturbation would require force to execute a mid-course correction and put it

back on the zero-potential.

Even if there is no continuous contour of zero potential available for the trip, if the

test charge starts out and arrives at points of zero potential, then the work done

along the way to push it against an occasional repelling force is exactly equal to the

work done by an occasional attracting force, and they add up to zero for the trip.

a negative charge

Positively charged objects have an excess of protons compared to electrons, while negatively charged objects have an excess of electrons compared to protons. These imbalances in charge cause positively charged objects to attract negatively charged objects and repel other positively charged objects, and vice versa for negatively charged objects.

But you do feel gravitational force. Your body has weight, doesn't it? Your arms have weight and you feel them being pulled down? If you let go of your arms, they move down? What you feel is the force required to oppose the force of gravity. Newton's Third law says that, for every force, there is an equal and opposite force. Your muscles impose a force holding your arms up. You feel this as effort, i.e. force.

As far as electrostatic force, its the same concept...

When a positively charged object is grounded, electrons from the ground will flow into the object to neutralize the positive charge. This movement of electrons will cause the object to become neutral in charge.

Static electricity can build up in fuel pipes when liquids flow through them, creating a potential fire hazard. If a spark ignites the fuel/air mixture, it can result in a fire or explosion. Proper grounding and bonding techniques are needed to prevent the accumulation of static electricity in fuel pipes.

The ebonite rod will acquire a negative charge, while the wool will acquire a positive charge through the process of triboelectric charging. This creates an attractive force between the two objects due to opposite charges, allowing the wool to stick to the ebonite rod.