Subject Experts Solutions for Chapter: Magnetic Effects of Electric Current, Exercise 1: Target Exercise

If the key in the arrangement is taken out, that is circuit is made open and the magnetic field lines are drawn over the horizontal plane $ABCD$. The lines are: 

A circular loop placed in a perpendicular to the plane of paper carries a current when the key $\left(K\right)$ is ON, the current as seen from the point A to B (in the plane of the paper and on the axis of the coil) is anticlockwise and clockwise respectively. The magnetic field lines points from B to A. The North Pole of the resultant magnet is close to :

According to Faraday's law of electro magnetic induction, 

Dynamo core is laminated because :

A: Magnetic flux can produce induced emf.

B: Faraday established induced emf experimentally.

A: A spark occur between the poles of a switch when the switch is opened.

B: Current flowing in the conductor produces magnetic field.

Match the following:

A conducting wire is moving towards right in a magnetic field $B$. The direction of induced current in the wire is shown in the figure. The direction of magnetic field will be :