# Direction of Electric field (EM induction)

• Rod Alexei
In summary, the direction of the electric field in the wire would be downward if the wire were pulled to the right. This can be determined using the right hand rule and the equation F=qvXB. The direction of the current is the same as the electric field for positive charges. However, there is confusion about whether to consider the moving charges as positive or negative, as this would affect the direction of the current. In this scenario, both electrons and protons are mobile, and the convention is to consider positive charges as moving. As there is no complete circuit, there is no current in the wire. Both protons and electrons are moving towards the right as the wire is dragged. The magnitude and direction of the forces acting on both particles
Rod Alexei

## Homework Statement

In which direction would the electric field in the wire point if the wire were pulled to the right?

Right hand rule
F=qvXB

## The Attempt at a Solution

My answer is downward. I am confused whether I should take the moving charges as positive or negative since this would determine the direction of the current.
I know that the direction of the current is the same as the electric field. (for positive)
Thanks!

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Rod Alexei said:
I am confused whether I should take the moving charges as positive or negative since this would determine the direction of the current.
Which particles are mobile? Electrons or protons?

Electrons. But we take the convention of moving "positive charges"

There is no "current" in this wire as there is no complete circuit. Protons and electrons both are moving towards right as the wire is dragged. What is the magnitude and direction of the forces acting on both the particles? What will happen because of these forces?

## What is the direction of the electric field in electromagnetic induction?

The direction of the electric field in electromagnetic induction is perpendicular to both the direction of the magnetic field and the direction of the induced current.

## How is the direction of the electric field determined in electromagnetic induction?

The direction of the electric field is determined by the right-hand rule, where the thumb points in the direction of the induced current, the fingers point in the direction of the magnetic field, and the palm points in the direction of the electric field.

## Does the direction of the electric field change in electromagnetic induction?

Yes, the direction of the electric field changes as the magnetic field or the induced current changes in magnitude or direction.

## What is the relationship between the direction of the electric field and the direction of the magnetic field in electromagnetic induction?

The direction of the electric field is always perpendicular to the direction of the magnetic field in electromagnetic induction.

## In which direction does the electric field point in electromagnetic induction when the magnetic field is increasing?

The electric field points in the direction opposite to the change in the magnetic field, or in the direction of decreasing magnetic field.

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