Assertion & Reason Test: Electric Charges & Fields - Grade 12 MCQ

Directions: In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Using Gauss law, it is possible to find the electric field at any point.

Reason (R): Gauss law is applicable for any type of charge distribution.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : A metallic shield in the form of a hollow shell may be built to block an electric field.

Reason : In a hollow spherical shield, the electric field inside it is zero at every point.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The Coulomb force is the dominating force in the universe.

Reason : The Coulomb force is weaker than the gravitational force.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : When bodies are charged through friction, there is a transfer of electric charge from one body to another, but no creation or destruction of charge.

Reason : This follows from conservation of electric charges.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Some charge is put at the centre of a conducting sphere. It will move to the surface of the sphere.

Reason : Conducting sphere has no free electrons at the centre.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The coulomb force is the dominating force in the universe.

Reason : The coulomb force is weaker than the gravitational force.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The property that the force with which two charges attract or repel each other are not affected by the presence of a third charge.

Reason : Force on any charge due to a number of other charges is the vector sum of all the forces on that charge due to other charges, taken one at a time.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : A point charge is brought in an electric field, the field at a nearby point will increase or decrease, depending on the nature of charge.

Reason : The electric field is independent of the nature of charge.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : When a conductor is placed in an external electrostatic field, the net electric field inside the conductor becomes zero after a small instant of time.

Reason : It is not possible to set up an electric field inside a conductor.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : On bringing a positively charged rod near the uncharged conductor, the conductor gets attracted towards the rod.

Reason : The electric field lines of the charged rod are perpendicular to the surface of the conductor.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : On disturbing an electric dipole in stable equilibrium in an electric field, it returns back to its stable equilibrium orientation.

Reason : A restoring torque acts on the dipole on being disturbed from its stable equilibrium.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The electric flux of the electric field ∮ E.dA is zero. The electric field is zero everywhere on the surface.

Reason : The charge inside the surface is zero.