When a positively charged object is brought near a grounded object (without touc

Question

When a positively charged object is brought near a grounded object (without touching) the force between the objects is

Question 1 options:

attractive because a negative charge is induced in the grounded object.

repulsive because a positive charge is induced in the grounded object.

zero because no charge is induced.

Originally a small sphere carries a positive charge. After the sphere has been grounded (brought in close contact with a grounded object) the excess charge on the sphere

Question 2 options:

is positive and exactly the same as it was originally.

is positive but only half of what it was originally.

is essentially zero.

is negative.

The electric field near a uniformly charged plane is

Question 3 options:

Proportional to the surface charge density.

Inversely proportional to the surface charge density.

Independent of the surface charge density.

The Coulomb force between two point particles has a magnitude of 10-3 N. The particles carry identical charges of 10 nC = 10-8 C. What is the distance between the particles?

Question 4 options:

0.9 mm

3 cm

3 m

9 m

attractive because a negative charge is induced in the grounded object.

repulsive because a positive charge is induced in the grounded object.

zero because no charge is induced.

Originally a small sphere carries a positive charge. After the sphere has been grounded (brought in close contact with a grounded object) the excess charge on the sphere

Question 2 options:

is positive and exactly the same as it was originally.

is positive but only half of what it was originally.

is essentially zero.

is negative.

The electric field near a uniformly charged plane is

Question 3 options:

Proportional to the surface charge density.

Inversely proportional to the surface charge density.

Independent of the surface charge density.

The Coulomb force between two point particles has a magnitude of 10-3 N. The particles carry identical charges of 10 nC = 10-8 C. What is the distance between the particles?

Question 4 options:

0.9 mm

3 cm

3 m

9 m

Explanation / Answer

When a positively charged object is brought near a grounded object, then same amount of negative charge is induced on the surface that faced towards positive charge.

Since, like charges repel each other and unlike charge attract each other, there is an attractive force exists.

Therefore, the correct option is

            Attractive because a negative charge is induced in the grounded object

If the sphere is grounded then, the excess charge on the sphere is moved to ground and the sphere becomes neutral.

Therefore, the correct option is

            Is essentially zero.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.