Awire placed on the plane of this screen carries a current toward the top of the screen. the wire feels a magnetic force toward the right. the direction of the magnetic field causing this force is which of the following? (a) outward out of the screen (b) inward into the screen (c) in the plane of the screen and toward the left edge (d) in the plane of the screen and toward the bottom edge.

option (a)

Explanation:

The direction of magnetic field is given by Fleming's left hand rule.

If we spread the fore finger, middle finger and the thumb of our right hand such that they are mutually perpendicular to each other, then the direction of force is in the direction of thumb, direction of magnetic field is given by the direction of fore finger and the middle finger indicates the direction of current .

Here, current is upwards, magnetic force is rightwards, so the direction of magnetic field is given in outwards from the screen.

the amount of current in the coil