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Which of the following statements about Electric Field Lines due to a charge arrangement is not correct?

We have three identical metallic spheres A, B, C. Initially sphere A is charged with charge 3Q, while B and C are neutral. First, sphere A is brought into contact with sphere B and then separated from it. After that, sphere A is brought into contact with sphere C and then separated from it. Finally, sphere A is brought into contact with sphere B again, and then separated from it. What is the final charge of sphere A

Which of the following statements about Electric Field Lines due to a charge arrangement is wrong?

A curved plastic rod of charge 42 nC forms a semi-circle of radius 0.35 m in the x-y plane, as shown below. The charge is distributed uniformly across the rod. What is the linear charge density

Which of the following statements about Electric Field Lines due to a charge arrangement is false?

Assuming the mass of a proton is

A 16.1×16.1 cm horizontal metal plane is uniformly charged to +62.0 nC. What is the electric field strength 2.50 mm above the center of the electrode?

The positive charge, =

A curved plastic rod of charge 57 nC forms a semi-circle of radius 0.79 m in the x-y plane, as shown below. The charge is distributed uniformly across the rod. What is the linear charge density

A curved plastic rod of charge 87 nC forms a semi-circle of radius 0.23 m in the x-y plane, as shown below. The charge is distributed uniformly across the rod. What is the linear charge density