## What affects the direction of the current moving through wire Check all that apply?

the thickness of the wire. the direction of the magnetic field. the type of magnet. the direction of the needle on an ammeter.

## What determines the direction of a magnetic field around a current carrying wire?

The magnetic field is strongest in the area closest to the wire, and its direction depends upon the direction of the current that produces the field, as illustrated in this interactive animation. Presented in the tutorial is a straight wire with a current flowing through it.

## In which direction is the current moving through the wire?

The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.

## What happens to a magnetic field around a wire if the direction of the current is reversed?

A magnetic field implies the existence of two poles, a north and a south. Also as the current is reversed the direction of the magnetic field produced around the conductor will also be reversed because as we have said previously, the direction of the magnetic field depends upon the direction of current flow.

## What is the right hand grip rule?

We can use the right hand grip rule to remember the relationship between current and field around a wire: Grab the wire with your right fist (as shown), thumb pointing up: this is the direction of conventional current ( + to – ). Your curled up fingers show the direction of the field.

## What is Maxwell right hand rule?

The Maxwell’s right hand thumb rule states that ‘When the conductor is held in your right hand, such that the direction of the thumb points the direction of the current and the curled finger gives the direction of the magnetic finger. ‘

## What is the use of right hand rule?

The right-hand rule imposes the following procedure for choosing one of the two directions. With the thumb, index, and middle fingers at right angles to each other (with the index finger pointed straight), the middle finger points in the direction of c when the thumb represents a and the index finger represents b.