Assertion & Reason Test: Moving Charges & Magnetism - 2 - 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): In a moving coil galvanometer, the coil is wound on a metallic frame.

Reason (R): The metallic frame helps in making steady deflection without oscillation.

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): Galvanometer to ammeter conversion takes place by connecting a low value resistance in parallel with it.

Reason (R): The low value resistance increases the effective resistance and protects the galvanometer.

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: Cyclotron is a device which is used to accelerate the positive ion.

Reason: Cyclotron frequency depends upon the velocity.

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 : In electric circuits, wires carrying currents in opposite directions are often twisted together

Reason : If the wires are not twisted together, the combination of the wires forms a current loop, the magnetic field generated by the loop might affect adjacent circuits or components.

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 charge, whether stationary or in motion, produces a magnetic field around it.

Reason : Moving charges produce only electric field in the surrounding space.

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 : If the current in a solenoid is reversed in direction while keeping the same magnitude, the magnetic field energy stored in the solenoid remains unchanged.

Reason : Magnetic field energy density is proportional to the magnetic field.

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: To convert a galvanometer into an ammeter a small resistance is connected in parallel with it.

Reason: The small resistance increases the combined resistance of the combination.