Interactive multiple-choice quiz: MCQ – Objective Questions انسباير وفق الهيكل

A

A. The direction of the magnetic force.

B

B. The direction of the north pole of the magnet.

C

C. The direction of conventional current (positive charges).

D

D. Direction of electron movement (actual current).

A

A. Direction of electrical resistance.

B

B. Direction of magnetic field lines (B).

C

C. The direction of the flow of electric charges.

D

D. Direction of electromotive force.

A

A. Straight lines parallel to the wire.

B

B. Lines extending from the center of the wire outwards.

C

C. Closed circular loops with the wire at their center.

D

D. Oval lines intersect at the poles of the wire.

A

A. In a clockwise direction.

B

B. In a counter-clockwise direction.

C

C. Parallel to the direction of the current.

D

D. Vertically towards the wire from all sides.

A

A. The intensity of the field increases with distance from the wire.

B

B. The intensity of the field remains constant regardless of the distance.

C

C. The intensity of the magnetic field is inversely proportional to the distance from the wire.

D

D. The intensity of the field is directly proportional to the square of the distance.

A

A. Directly with the current and inversely with the distance from the wire.

B

B. Inversely with the current and directly with the distance from the wire.

C

C. Directly proportional to both the current and the distance.

D

D. It is not affected by current or distance.

A

A. The wire is made of a permanent magnetic material.

B

B. Electric current produces a magnetic field.

C

C. The compass is affected by the heat generated by the wire.

D

D. The Earth's magnetic field stops when an electric current passes through it.

A

A. The lines scatter in random directions.

B

B. The magnetic field is zero inside the center of the loop.

C

C. The field lines accumulate and all become aligned in one direction within the loop.

D

D. The lines remain straight and parallel to the plane of the ring.

A

A. It's heading towards you too.

B

B. He moves away from you (inwards).

C

C. It should be perfectly parallel to the loop wires.

D

D. The field stops at the outer wire's boundary.

A

A. Direction of electric current (I).

B

B. The direction of the south pole of the magnet.

C

C. Direction of magnetic field lines (B).

D

D. The direction of the applied magnetic force.

A

A. It is a uniform magnetic field all around the wire.

B

B. The single-loop current forms a field that surrounds each loop, and fields accumulate within it.

C

C. The resulting field is weaker than the field produced by a straight wire of the same current.

D

D. The field lines inside the ring are always in a clockwise direction.

A

A. The magnetic attraction strength increases.

B

B. The direction of the magnetic field is reversed inside and outside the loop.

C

C. The magnetic field is transformed into a static electric field.

D

D. The magnetic field is not affected by a change in the direction of the current.

A

A. Magnetic force.

B

B. Current intensity.

C

C. Magnetic flux.

D

D. Electromagnetic induction.

A

A. Extreme cooling.

B

B. Paint with an insulating material.

C

C. Overheating or a strong fall.

D

D. Put it in the water.

A

A. A giant permanent magnet.

B

B. A very small solenoid (electromagnet).

C

C. A sensitive compass needle.

D

D. Constant current.

A

A. Increase the intensity of the current passing through it.

B

B. Increase the number of wire turns.

C

C. Place an iron rod inside the coil.

D

D. Increase the spacing between coil turns.

A

A. The electrical capacitor.

B

B. Solenoid.

C

C. Photoresistor.

D

D. The ammeter.

A

A. Direction of charge flow.

B

B. The direction of the applied magnetic force.

C

C. The direction of the magnetic force acting on the wire.

D

D. Direction of electrical resistance of the wire.

A

A. Parallel to the direction of the current

B

B. Out of the page (towards the observer).

C

C. Entering the page (away from the viewer).

D

D. Downwards, parallel to the connecting wires.

A

A. Parallel to the magnetic field lines.

B

B. Parallel to the direction of the electric current.

C

C. Perpendicular to both the direction of the magnetic field and the direction of the current.

D

D. A 45-degree angle is always present between the field and the current.

A

A. The direction of the force remains unchanged.

B

B. The direction of the force is reversed to become the opposite direction.

C

C. The force becomes equal to zero.

D

D. The wire rotates in a circular path instead of moving in a straight line.