of the gas. A magnetic field is applied to the beam using Helmholtz coils. Helmholtz coils are two vertically orientated‚ identical circular coils of wire (solenoids) that are placed parallel to each other‚ symmetric along a shared axis‚ one on each side of the domain of the experiment. There are equal currents flowing in the same direction in each coil. The distance‚ d‚ between the coils is equal to the radius‚ RC‚ of the coils. As a
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UNIT-1 ELECTROSTATICS Where the energy of capacitor does resides? Do electrons tend to go to region of low or high potential? What is the net charge on the charged capacitor? A Gaussian surface encloses an electric dipole within it. What is the total flux across sphere? 5. Find the dimension of 1/2εoE2. 6. In a certain l m3 of space‚ electric potential is found to be V Volt throughout. What is the electric field in this Region? 7. If Coulomb law involves 1/r3 instead of 1/r2 dependence‚ would Gauss
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supplies. The electrodynamic wattmeter uses the reaction between the magnetic fields of two current-carrying coils‚ one fixed and the other movable. The voltage and current coils are wound around a laminated iron core to produce a magnetic field across the air gap. When the current through the fixed-position field windings is the same as current through the load and the current through the moving coil is proportional to the load voltage‚ then the pointer deflection is proportional to the power (P=IV).
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and found in cats worldwide. Nature’s pest‚ the mosquito‚ is the cause of Dirofilaria immitis. At least 70 species of mosquitoes can serve as intermediate hosts‚ of which the most common vectors are Aedes‚ Anopheles‚ and Culex (Woodhaven Labs). When taking a blood meal from microfilaremic host --like wolves‚ coyotes‚ foxes or dogs-- the adult female mosquito becomes infected with the microfilariae that becomes a larva within 10-14 days. The mosquito then deposits this parasite on the surface of the
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the example is the anti-mosquito aerosol Force magic‚ where the manufacturer states that the compound used in anti-mosquito aerosol derived from natural substances that are not harmful to humans. For competitors Force magic‚ such as Baygon and Hit‚ does not seem to use the same content with the Force magic. Some aerosols are using the contents injurious to consumers‚ but proved to be more powerful than the other content. There is even one of the brands of aerosol mosquito which was being pulled out
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Finding the Charge to Mass Ratio of the Electron Via a Uniform Magnetic Field Generated by Helmholtz Coils Abstract The charge to mass ratio of the electron was found to be [pic] with a percent difference from the accepted value ([pic]) of 1.1% when adjusted for the Earth’s magnetic field. Without taking the Earth’s magnetic field into consideration‚ the charge to mass ratio was found to be [pic] with a percent difference of 5.3%.
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Monsoon maladies – Enemies in the Rain Monsoon brings with it the much-awaited relief from the long spell of sultry‚ scorching summer. When the season of rains people are all set to enjoy it to the hilt irrespective of their age. There are people whose idea of enjoying the drizzle is gorging on their favorite ‘pakoras’ and ‘chai’‚ while watching the lovely weather from the comfort of their homes. while there are also people who want to go out and enjoy the season dancing in the rain. Children love
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surface coils‚ volume coils‚ knee positioning pads‚ sandbags‚ and Gadolinium‚ in the case of a Magnetic Resonance Angiogram. Firstly‚ in some cases‚ a surface coil is used. They are of the simplest design‚ a loop of conducting material. It is used as a transmitter of radiofrequency energy. This receiver coil is placed on the region of interest or the knee‚ in this example‚ for greater magnetic sensitivity. It’s often used because it has a good signal to noise ratio for tissue next to the coil. However
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is because they make that annoying buzz.. sound‚ that is so abnoxious that not even the twelve disciples would be able to stand it‚ they always fly as fast as a stealth bomber around you making it very hard to kill‚ and the challenge of killing a mosquito is so annoying that I get very angy‚ and irritated. It is like a bull looking at the color red. Also when they bite you‚ the area that was bitten get as swollen as a boil‚ and it is very itchy. I was drifting off to sleep while listening to the
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rectangular frame with a copper wire coil‚ with the ends of the wire attached to small spiral springs. Attached to the coil is a needle. The coil carries the electrical current‚ causing the needle to move. When the needle moves‚ it points to a reading on a dial which represents voltage. The Reading The needle will point to zero on the dial when the voltmeter is not in use. When a current moves through the coil‚ the magnetic field creates a force on the coil‚ resulting in needle movement. The force
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