Gauss
The intensity of the magnetic field (measured in Teslas) produced by an electromagnet is directly proportional to the current (measured in Amperes) passing through it's coil windings. Therefore, as long as other variables remain constant, one can vary the intensity of the magnetic field by varying the current. Specifically, the intensity of the magnetic field will vary by the same factor as the current, so if the current is halved, the intensity of the magnetic field will also be halved; and if the current is tripled, the intensity of the magnetic field will also be tripled.
If the incident direction of an electron is right, The electron travels a measured distance along the pathÊ prior to exiting the magnetic field.
Different units are used. From Wikipedia: "The term [magnetic field] is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter ... B is measured in teslas (symbol:T) and newtons per meter per ampere(symbol: N·m−1·A−1 or N/(m·A)) in the SI. ..."
If the size of a magnet is changed, it can affect the overall strength of the magnetic field it produces. Generally, a larger magnet will have a stronger magnetic field, while a smaller magnet will have a weaker magnetic field. However, other factors such as the magnet's composition and shape can also influence the strength of the magnetic field.
Gauss
The electric power is measured the same as in any other electric circuit, in watts. You calculate this by multiplying the current (in amps) by the potential difference (in volts) across the circuit. So: P = I V If you meant how do we measure the strength of the magnetic field generated, there are two different vector fields that may be called "magnetic field". These are the H-field and the B-field. The H-field may also be called the "magnetic field intensity", the "magnetic field strength", the "auxiliary magnetic field" or the "magnetising field". It is measured in amps per metre. The B-field may also be called the "magnetic flux density", the "magnetic induction", or the "magnetic field". It is measured in teslas.
Mercury does, despite its small size, have a magnetic field, and the planet is approximately a magnetic dipole (meaning the field has only two magnetic poles). Data from the space probe Mariner 10 led to its discovery in 1974, at which time the probe measured the strength of the magnetic field to be about 1.1% of that of earth, but it's strong enough to divert solar radiation and therefore creates a magnetosphere around the planet.
The intensity of the magnetic field (measured in Teslas) produced by an electromagnet is directly proportional to the current (measured in Amperes) passing through it's coil windings. Therefore, as long as other variables remain constant, one can vary the intensity of the magnetic field by varying the current. Specifically, the intensity of the magnetic field will vary by the same factor as the current, so if the current is halved, the intensity of the magnetic field will also be halved; and if the current is tripled, the intensity of the magnetic field will also be tripled.
No, magnetic fields can only pass through non-magnetic objects (e.g cloth)
If the incident direction of an electron is right, The electron travels a measured distance along the pathÊ prior to exiting the magnetic field.
The Concept of a metal detector is that a magnetic field is projected and measured. Metal in the field will change the measurement of the field. The threshold is the level of change in the measured field that will trigger the alarm, or if you prefer, the notification.
Different units are used. From Wikipedia: "The term [magnetic field] is used for two distinct but closely related fields denoted by the symbols B and H, where H is measured in units of amperes per meter ... B is measured in teslas (symbol:T) and newtons per meter per ampere(symbol: N·m−1·A−1 or N/(m·A)) in the SI. ..."
:-P
A magnet creates a magnetic field, often mistakenly referred to as a magnetic force. The actual force felt by a charged particle in a magnetic field (or electric field) is called the Lorentz force.
If the size of a magnet is changed, it can affect the overall strength of the magnetic field it produces. Generally, a larger magnet will have a stronger magnetic field, while a smaller magnet will have a weaker magnetic field. However, other factors such as the magnet's composition and shape can also influence the strength of the magnetic field.
about 10 times the size of the sun