- Are electric field lines closed curves?
- Why does a compass always point north?
- Why do magnetic lines move from north to south?
- Why are magnetic lines of force closed?
- Can magnetic field lines pass through vacuum?
- What is magnetism caused by?
- Is North positive or negative?
- Which way do magnetic fields flow?
- Why can’t magnetic field lines cross?
- How do you know if a magnet is north or south?
- Why do magnetic field lines emerge from the North Pole?
- Do magnetic fields go from south to north?
- Where is a magnetic field strongest?
- Is North Up and south down?
Are electric field lines closed curves?
The electric field lines can never form closed loops, as line can never start and end on the same charge.
These field lines always flow from higher potential to lower potential..
Why does a compass always point north?
When it comes to magnets, opposites attract. This fact means that the north end of a magnet in a compass is attracted to the south magnetic pole, which lies close to the geographic north pole. Magnetic field lines outside of a permanent magnet always run from the north magnetic pole to the south magnetic pole.
Why do magnetic lines move from north to south?
Magnetic Field Lines. Unlike Poles Attract Each Other. … If on the other hand, the like poles, i.e. the north and the north pole (or the south and the south pole) are placed close to each other, the magnets do not link and the magnets repel each other. This is why the needle in a compass always points north/south.
Why are magnetic lines of force closed?
Magnetic lines form continuous closed loops because magnetic monopole does not exist in nature. We always find magnetic poles – North and South pole which are coupled together in such a way that field lines originating from one pole ends at the another loop, forming a closed loop.
Can magnetic field lines pass through vacuum?
The short answer is: because electromagnetic forces (that is, electricity and magnetism) “travel” through vacuum. … Electromagnetic waves are special. They dont require any material medium to travel.
What is magnetism caused by?
Magnetism is caused by the motion of electric charges. Every substance is made up of tiny units called atoms. Each atom has electrons, particles that carry electric charges. … Their movement generates an electric current and causes each electron to act like a microscopic magnet.
Is North positive or negative?
When magnets are used in magnetic therapy, the poles are often referred to as being positive or negative. Generally, the south pole is termed positive, and the north negative.
Which way do magnetic fields flow?
The general direction for the magnetic flux flow is from the North ( N ) to the South ( S ) pole. In addition, these magnetic lines form closed loops that leave at the north pole of the magnet and enter at the south pole. Magnetic poles are always in pairs.
Why can’t magnetic field lines cross?
Magnetic field lines can never cross, meaning that the field is unique at any point in space. Magnetic field lines are continuous, forming closed loops without beginning or end. They go from the north pole to the south pole.
How do you know if a magnet is north or south?
One easy way to tell which pole is north and which is south is to set your magnet near a compass. The needle on the compass that normally points toward the north pole of the Earth will move toward the magnet’s south pole.
Why do magnetic field lines emerge from the North Pole?
When a small north magnetic pole is placed in the magnetic field it will experience a force. These lines around the magnet represent the path of an imaginary independent north pole if it were allowed to move freely in the direction of the magnetic force.
Do magnetic fields go from south to north?
It’s a convention that magnetic field lines are drawn from north to south. Because we have defined the magnetic field lines to show the direction of the magnetic force on a north pole. Hence, they are defined as north to south.
Where is a magnetic field strongest?
the closer the lines, the stronger the magnetic field (so the magnetic field from a bar magnet is strongest closest to the poles) the lines have arrowheads to show the direction of the force exerted by a magnetic north pole.
Is North Up and south down?
For world maps, because we often put them on a wall, north really is up, and south is down, even though on earth those directions are both horizontal. Sometimes people print maps in other orientations so they make more sense.