- What happens if the direction of the current is reversed?
- What does the direction of compass needle indicate?
- Which way does a compass needle always go?
- What is the direction of current in circuit?
- What causes the direction of the current to change?
- Is the needle of a compass a magnet?
- How do you use a compass to find true north?
- What happens to the direction of the magnetic field if the direction of current is reversed?
What happens if the direction of the current is reversed?
One end of the magnet becomes a north pole and the other end becomes the south pole.
When you reverse the direction of the current flowing in the wire, the north and south poles are also reversed.
In fact, each time the current is reversed, the north and south poles will exchange places..
What does the direction of compass needle indicate?
A compass needle points north because the north pole of the magnet inside it is attracted to the south pole of Earth’s built-in magnet. … Now if the needle in your compass is pointing north, that means it’s being attracted (pulled toward) something near Earth’s north pole.
Which way does a compass needle always go?
Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole.
What is the direction of current in circuit?
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 causes the direction of the current to change?
In a direct current circuit, current is caused by electrons that all line up and move in one direction. … When the electrons in alternating current switch direction, the direction of current and the voltage of the circuit reverses itself.
Is the needle of a compass a magnet?
The needle of a compass is itself a magnet, and thus the north pole of the magnet always points north, except when it is near a strong magnet.
How do you use a compass to find true north?
When the needle and orienting arrow line up, the direction of travel arrow on the base will point true north. You can also accomplish this by aligning the orienting arrow and the direction of travel arrow. Then, hold out your compass and turn your body until the needle points to your declination.
What happens to the direction of the magnetic field if the direction of current is reversed?
The magnetic field generated is always perpendicular to the direction of the current and parallel to the solonoid. Hence if we reverse the current the direction of magnetism also reverses. In other words the magnetic poles gets reversed (North pole becomes south pole and the south pole becomes the north pole).