LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
... 3. State the relation between Peltier and Thomson coefficient. 4. Mention any two applications of potentiometer. 5. State BiotSavart’s law. 6. Define Lorentz force. 7. A solenoid of length 30 cm and area of cross section 10 sq cm has 1000 turns wound over a core of relative permeability 600 Another ...
... 3. State the relation between Peltier and Thomson coefficient. 4. Mention any two applications of potentiometer. 5. State BiotSavart’s law. 6. Define Lorentz force. 7. A solenoid of length 30 cm and area of cross section 10 sq cm has 1000 turns wound over a core of relative permeability 600 Another ...
E & M
... have a 1-clockwise, 2counter-clockwise, or 3no current when: 1. The B field strength is increasing. 2. The B field strength is constant. 3. The B field strength is decreasing. ...
... have a 1-clockwise, 2counter-clockwise, or 3no current when: 1. The B field strength is increasing. 2. The B field strength is constant. 3. The B field strength is decreasing. ...
02 Expl Magnet LQ
... Magnetism is the force of attraction or repulsion between a magnet and something else. Magnets attract materials made of iron, nickel, or cobalt. Can you think of five things to which a magnet may be attracted? Does it matter which end of the magnet is brought near the object All magnets, no matter ...
... Magnetism is the force of attraction or repulsion between a magnet and something else. Magnets attract materials made of iron, nickel, or cobalt. Can you think of five things to which a magnet may be attracted? Does it matter which end of the magnet is brought near the object All magnets, no matter ...
qualifying_exam_2
... orientation. The nuclear moment can either give up energy (transition from anti-parallel to parallel), or absorb energy (transition from parallel to antiparallel). The NMR signal is basically the difference between the absorbed and emitted energy. Given that my device will be characterized by very s ...
... orientation. The nuclear moment can either give up energy (transition from anti-parallel to parallel), or absorb energy (transition from parallel to antiparallel). The NMR signal is basically the difference between the absorbed and emitted energy. Given that my device will be characterized by very s ...
Summary on Units, Dimensions and Conversions on Electrodynamics
... In this section we present tables of conversion in which factors are to be multiplied to convert one system to the other. We note that there is a special system referred to as “none” in FLASH. This system rescales the magnetic field (thus the derived quantity electric field implicitly) in such a way ...
... In this section we present tables of conversion in which factors are to be multiplied to convert one system to the other. We note that there is a special system referred to as “none” in FLASH. This system rescales the magnetic field (thus the derived quantity electric field implicitly) in such a way ...
power from the people - Edinburgh International Science Festival
... Safety: The battery and nail will start to get warm. After 5 minutes, disconnect the wires from the battery. Allow them to cool before you try again. 7. Touch the balloon to the strip of tinfoil. Listen carefully. Can you hear anything? Repeat steps 6 and 7 at least 5 times (the more you repeat the ...
... Safety: The battery and nail will start to get warm. After 5 minutes, disconnect the wires from the battery. Allow them to cool before you try again. 7. Touch the balloon to the strip of tinfoil. Listen carefully. Can you hear anything? Repeat steps 6 and 7 at least 5 times (the more you repeat the ...
the magnetic field
... Bar Magnet & Stand (a) Using the small compasses, determine what the North Magnetic Pole direction is and indicate it by drawing an arrow. Use more than one compass because some of the small (cheap!) compasses don’t always work properly. Compare your results with other tables. Be careful to keep awa ...
... Bar Magnet & Stand (a) Using the small compasses, determine what the North Magnetic Pole direction is and indicate it by drawing an arrow. Use more than one compass because some of the small (cheap!) compasses don’t always work properly. Compare your results with other tables. Be careful to keep awa ...
Presentation 1
... H or B B determines • Force (e.g. in motor) • EMF (e.g. in alternator, transformer, RFID…) curl H = J gives magnetic field from any current carrying structure irrespective of the medium. From that we can determine B Describes the bending of B when going through media of different permeabilities ...
... H or B B determines • Force (e.g. in motor) • EMF (e.g. in alternator, transformer, RFID…) curl H = J gives magnetic field from any current carrying structure irrespective of the medium. From that we can determine B Describes the bending of B when going through media of different permeabilities ...
Motional EMF
... right in a magnetic field that is into the diagram. Positive charges in the conductor will experience an upward force and negative charges a downward force ...
... right in a magnetic field that is into the diagram. Positive charges in the conductor will experience an upward force and negative charges a downward force ...
Magnetism
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Every material is influenced to some extent by a magnetic field. The most familiar effect is on permanent magnets, which have persistent magnetic moments caused by ferromagnetism. Most materials do not have permanent moments. Some are attracted to a magnetic field (paramagnetism); others are repulsed by a magnetic field (diamagnetism); others have a more complex relationship with an applied magnetic field (spin glass behavior and antiferromagnetism). Substances that are negligibly affected by magnetic fields are known as non-magnetic substances. These include copper, aluminium, gases, and plastic. Pure oxygen exhibits magnetic properties when cooled to a liquid state.The magnetic state (or magnetic phase) of a material depends on temperature and other variables such as pressure and the applied magnetic field. A material may exhibit more than one form of magnetism as these variables change.