G12 Right Hand Rule

When the wire loop is rotated counter-clockwise, the motion causes the brushes to make contact with the metal strips at different points. The right brush will make contact with the right half-circular strip, which is connected to the positive pole of the battery. Therefore, the right brush will measure a positive voltage. On the other hand, the left brush will make contact with the left half-circular strip, which is connected to the negative pole of the battery. Hence, the left brush will measure a negative voltage. Therefore, the polarity of voltage measured as the loop is rotated counter-clockwise is right positive and left negative.

The magnetic field generated by a current into the screen is clockwise because of the right-hand rule. According to the right-hand rule, if the thumb of the right hand points in the direction of the current, then the fingers curl in the direction of the magnetic field. In this case, if the current is flowing into the screen, the magnetic field lines will form a clockwise pattern around the current.

The north pole is created on the left side. This implies that the question is asking about the creation or origin of the north pole, rather than its physical location. Therefore, the correct answer is "Left."

In the right hand rule, the thumb is used to indicate the direction of the current. This rule is commonly used in physics and electromagnetism to determine the direction of a magnetic field created by a current-carrying wire. By pointing the thumb in the direction of the current, the fingers can curl in the direction of the magnetic field lines. Therefore, the statement is true.

They should be perpendicular

The direction of the force is up.

When current is passed through a loop of wire, the direction of the magnetic field around the wire is determined by the right-hand rule. According to the right-hand rule, if the thumb of the right hand points in the direction of the current, then the fingers curl in the direction of the magnetic field. In this case, if we imagine placing our right hand around the loop with the fingers pointing in the direction of the current, the thumb will point in the clockwise direction. Therefore, the loop will rotate in the clockwise direction.

The force is directed towards the right.

Diagram D shows the correct shape of the field because it has the straightest edges and the most symmetrical shape compared to the other diagrams. The other diagrams have irregular shapes and uneven edges, which would not be ideal for a field.

The direction of the force is left.