
SA1 REVISION WORKSHEET 2
... 5. Compare and contrast Biomass and Hydroelectricity as source of energy. 6. (a) A current carrying aluminium rod AB is placed in a magnetic field. The direction of magnetic field is vertically upward. How do we think the displacement of rod AB will be affected if: the current in the rod AB is incre ...
... 5. Compare and contrast Biomass and Hydroelectricity as source of energy. 6. (a) A current carrying aluminium rod AB is placed in a magnetic field. The direction of magnetic field is vertically upward. How do we think the displacement of rod AB will be affected if: the current in the rod AB is incre ...
Magnetic Forces on Moving Charges
... 9. An electron moves at a speed of 6.2 x 106 m/s perpendicular to a constant magnetic field. The path is a circle of radius 2.2 x 10-3 m. a. Draw a sketch showing the magnetic field and the electron’s path. b. What is the magnitude of the field? c. What is the magnitude of the electron’s acceleratio ...
... 9. An electron moves at a speed of 6.2 x 106 m/s perpendicular to a constant magnetic field. The path is a circle of radius 2.2 x 10-3 m. a. Draw a sketch showing the magnetic field and the electron’s path. b. What is the magnitude of the field? c. What is the magnitude of the electron’s acceleratio ...
Magnetism
... All atoms have magnetic fields because of the charged particles inside. Most atoms’ magnetic fields point in random directions, so they all cancel each other out. ...
... All atoms have magnetic fields because of the charged particles inside. Most atoms’ magnetic fields point in random directions, so they all cancel each other out. ...
I happen to have discovered a direct relation
... The greater the current, the stronger the magnetic field. This was the beginning of the recognition that electricity and magnetism were just different aspects of the same phenomena (heads and tails of the same coin). ...
... The greater the current, the stronger the magnetic field. This was the beginning of the recognition that electricity and magnetism were just different aspects of the same phenomena (heads and tails of the same coin). ...
Magnetometer

Magnetometers are measurement instruments used for two general purposes: to measure the magnetization of a magnetic material like a ferromagnet, or to measure the strength and, in some cases, the direction of the magnetic field at a point in space.The first magnetometer was invented by Carl Friedrich Gauss in 1833 and notable developments in the 19th century included the Hall Effect which is still widely used.Magnetometers are widely used for measuring the Earth's magnetic field and in geophysical surveys to detect magnetic anomalies of various types. They are also used militarily to detect submarines. Consequently, some countries, such as the USA, Canada and Australia classify the more sensitive magnetometers as military technology, and control their distribution.Magnetometers can be used as metal detectors: they can detect only magnetic (ferrous) metals, but can detect such metals at a much larger depth than conventional metal detectors; they are capable of detecting large objects, such as cars, at tens of metres, while a metal detector's range is rarely more than 2 metres.In recent years magnetometers have been miniaturized to the extent that they can be incorporated in integrated circuits at very low cost and are finding increasing use as compasses in consumer devices such as mobile phones and tablet computers.