Magnetic Field Lines
... However, potential fields do not have electric currents that are necessary for plasma heating and impulsive energy releases, e.g. flares and coronal mass ejections (CME). Thus, this extrapolation provides us with a very approximate geometry of the field only. ...
... However, potential fields do not have electric currents that are necessary for plasma heating and impulsive energy releases, e.g. flares and coronal mass ejections (CME). Thus, this extrapolation provides us with a very approximate geometry of the field only. ...
Year 9 KS3 Exam Revision
... Some metals are very unreactive. That means they do not easily take part in chemical reactions. For example platinum does not react with oxygen in the air, even if it is heated in a Bunsen burner flame. Some metals are very reactive. They easily take part in chemical reactions to make new substance ...
... Some metals are very unreactive. That means they do not easily take part in chemical reactions. For example platinum does not react with oxygen in the air, even if it is heated in a Bunsen burner flame. Some metals are very reactive. They easily take part in chemical reactions to make new substance ...
induced voltage and torque
... the voltage on the coil must be built up with the polarity required to drive that current through the external circuit. Therefore, the voltage must be built up with polarity shown in Figure b. Since the polarity of the resulting voltage can be determine from physical considerations, the minus sign i ...
... the voltage on the coil must be built up with the polarity required to drive that current through the external circuit. Therefore, the voltage must be built up with polarity shown in Figure b. Since the polarity of the resulting voltage can be determine from physical considerations, the minus sign i ...
Quiz 6 (Due date March 04)
... Increasing the separation between the coils of the solenoid increases the magnitude of the magnetic field at the center of the solenoid. As long as the current is non-zero, changing the magnitude of the current without changing its sign results in a change in the magnitude of the magnetic field at e ...
... Increasing the separation between the coils of the solenoid increases the magnitude of the magnetic field at the center of the solenoid. As long as the current is non-zero, changing the magnitude of the current without changing its sign results in a change in the magnitude of the magnetic field at e ...
MAGNETIC FORCE ON A CURRENT
... To show that the magnetic force on a wire is proportional to the current in the wire and to use that force to calculate the magnetic field strength. APPARATUS: Large electromagnet with DC power supply Two ammeters U-shaped wire suspended from balance DC power supply for wire Gaussmeter with transver ...
... To show that the magnetic force on a wire is proportional to the current in the wire and to use that force to calculate the magnetic field strength. APPARATUS: Large electromagnet with DC power supply Two ammeters U-shaped wire suspended from balance DC power supply for wire Gaussmeter with transver ...
Sample Question Paper
... The co-axial cable shown in Figure Q1.1 has two concentric layers of dielectric between the core of radius r1 = 1 mm and the sheath of radius r3 = 3 mm. The dielectric layers separate at radius r2 = 2 mm. The relative permittivity of inner dielectric εr1 = 4 and that of the outer dielectric εr2 = 3. ...
... The co-axial cable shown in Figure Q1.1 has two concentric layers of dielectric between the core of radius r1 = 1 mm and the sheath of radius r3 = 3 mm. The dielectric layers separate at radius r2 = 2 mm. The relative permittivity of inner dielectric εr1 = 4 and that of the outer dielectric εr2 = 3. ...
Electric Current Creates Magnetic Field
... between an electrical power source and current flowing through a wire? 2. What conclusions can you make regarding the relationship between the electrical power source and the magnetic field produced by the electrical current? ...
... between an electrical power source and current flowing through a wire? 2. What conclusions can you make regarding the relationship between the electrical power source and the magnetic field produced by the electrical current? ...
1 Slinking round Learning Objectives: 1. Explore the Earthss
... Checkpoint 1! Explain magnetic fields of bar magnets and a loop of wire connected to a battery. II. Exploration: Exploring magnetic fields in a slinky You are likely familiar with a metal slinky, having played with them as a child by setting them in motion down stairs. But slinkies can be used as a ...
... Checkpoint 1! Explain magnetic fields of bar magnets and a loop of wire connected to a battery. II. Exploration: Exploring magnetic fields in a slinky You are likely familiar with a metal slinky, having played with them as a child by setting them in motion down stairs. But slinkies can be used as a ...
The Charge to Mass Ratio of the electron
... charged particles (electrons) and pass the beam through a magnetic field B perpendicular to the velocity v of the beam. By changing the potential difference that the electrons are accelerated through we can control the velocity of the charges and, for a fixed value of the magnetic field, determine t ...
... charged particles (electrons) and pass the beam through a magnetic field B perpendicular to the velocity v of the beam. By changing the potential difference that the electrons are accelerated through we can control the velocity of the charges and, for a fixed value of the magnetic field, determine t ...
Superconducting magnet
A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire can conduct much larger electric currents than ordinary wire, creating intense magnetic fields. Superconducting magnets can produce greater magnetic fields than all but the strongest electromagnets and can be cheaper to operate because no energy is dissipated as heat in the windings. They are used in MRI machines in hospitals, and in scientific equipment such as NMR spectrometers, mass spectrometers and particle accelerators.