Across
- Where on a bar magnet is the magnetic field strongest?
- A strong electromagnet has a large current, a highly permeable core and a large number of wire _________.
- Magnetism is always present when electrical charges ______________.
- An electromagnet would have the greatest strength if its wire were wrapped around a core made of ________.
- The magnetic lines of force near a long straight current-carrying wire have a _______ shape.
- The magnetic field around a bar magnet is mapped by drawing magnetic ______. (2 words)
- The strongest magnetic field is created when the north pole of a magnet is placed near the ______ pole of another magnet.
- When a charge is shot at an angle of 90 degrees to an electric field, the angle of deflection depends on the amount and _____ of the charge and the strength of the magnetic field.
- A core with a high permeability has the ability to ___________ the magnetic field of an electromagnet.
- The amount of electric potential induced in an electric generator depends on how ______ you move a loop of wire through a magnetic field.
- Electricity is created when you move a loop of wire in a __________ ___________ (two words)
- Moving electrical charges produce ________ fields.
- The ___________ pole of a compass is used to determine the direction of a magnetic field.
- An electron moving ________to a magnetic field will experience no magnetic force.
- The presence of a uniform magnetic field may be detected by using a _________.
- The field around a permanent magnet is caused by motions of _________.
|
|
Down
- If the _________of an electron moving perpendicularly through a magnetic field were increased, the force on the electron would increase.
- A conductor is moving perpendicularly to a uniform magnetic field. Increasing the speed of the conductor will cause the _________ ____________ generated to increase. (2 words)
- The electrons generate magnetic fields by _________ on their axis.
- When a wire in a magnetic field is moved in a 90 degree angle it generates _______ electricity
- As a charged particle moves through a magnetic field, the particle is deflected. The magnitude of the magnetic force acting on the particle is directly proportional to the ________ _________ on the particle. (two words)
- A generator converts mechanical energy to __________ energy.
- The flux lines of a strong magnetic field are very ________ .
- This English physicist discovered that a wire with current will move when placed perpendicular to a magnetic field.
- A compass is used to find the _________ of the magnetic field.
- The direction of the flux lines of a bar magnet: ______ of north into south.
- As the current in a conductor is increased, the strength of the magnetic field at a point near the wire __________.
- An electron moving in a uniform magnetic field experiences the maximum magnetic force when the angle between the direction of the electrons motion and the direction of the magnetic field is _________.
- The region in which a magnet experiences a force is called a magnetic _____.
|