In the system illustrated by the diagram, the magnetic field is increasing. In which
direction is the induced emf, if any?

The emf will be induced in anti-clockwise direction.

Explanation

Lenz's law tells us the direction us the direction that the current will flow. It states that the direction is always such that it will oppose the change in flux which produced it. This means that any magnetic field produced by an induced current will be in opposite direction to the change in the original field.

To find the direction of emf, Stretch the forefinger, middle finger and the thumb of the right hand mutually perpendicular to each other. If the force finger points in the direction of the magnetic field, the thumb gives the direction of the motion of the conductor then the middle finger gives the direction of the induced current.

which three statements are true about all alloys?

c) up

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