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 law be still true? 8. An electrostatic field line can’t be discontinuous‚ why? 9. The given graph shows that the variation of charge versus potential difference V for the two capacitors C1 & C2. The two capacitors have same plate
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partly true‚ as the losses arising from magnetic leakage flux in various metal parts of a transformer constitute a significant part of the total losses. This component of total losses is called stray (additional) loss (Ps ). In addition‚ experts distinguish between the stray losses in the windings (winding eddy loss: eddy-current loss in conductors‚ and circulating-current loss in parallel strands) and outside the windings (stray 2 1 magnetic shield on the tank 2 yoke clamping
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arranged at three of the corners of a 20-nm square as shown. The magnitude of the electric field at D‚ the fourth corner of the square‚ is approximately | A) | 1.4 107 N/C | D) | 30 N/C | B) | 1.0 1011 N/C | E) | 1.8 107 N/C | C) | 3.6 1010 N/C | | | | | | An infinitely long cylinder of radius 4.0 cm carries a uniform volume charge density = 200 nC/m3. What is the electric field at r = 2.0 cm? | | A) zero B) 0.11 kN/C C) 57 N/C D) 0.44 kN/C E)
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unlike charges attract‚ like ones repel. 2. Magnetic poles (or states of polarization at individual points) attract or repel one another in a similar way and always come in pairs: every north pole is yoked to a south pole. 3. An electric current in a wire creates a circular magnetic field around the wire‚ its direction depending on that of the current. 4. A current is induced in a loop of wire when it is moved towards or away from a magnetic field‚ or a magnet is moved towards or away from
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Electrodynamic suspension Stability Power and energy usage Advantages and disadvantages of Maglev Train Introduction • Magnetic levitation transport is a form of transportation that suspends guides and propels vehicles through the harnessing of electromagnetic force. • The term "maglev" refers not only to the vehicles but also to the railway system. • Maglev train uses magnetic levitation from a very large number of magnets for lif and propulsion. • Has the potential to be faster‚ quieter and smoother
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is Different than Other Technologies | 6 | | 3.1 | Traditional Magnetic Induction | 6 | | 3.2 | Witricity Technology is Different than Radiative Power Transfer | 6 | | 3.3 | Witricity Technology is Different than Magnetic Resonance Imaging | 7 | 4 | Striking Features Of Witricity | 7 | | 4.1 | Highly Resonant Strong Coupling Provides High Efficiency Over Distance | 7 | | 4.2 | Energy Transfer Via Magnetic Near Field Can Penetrate And Wrap Around Obstacles | 7 | | 4.3 | Non-Radiative
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Introduction The purpose of this lab is to examine the motion of an electron‚ when it encounters a constant magnetic and electric field. We will also observe when the electric field and magnetic field will cancel each other out. This will lead to the electron having no net force acting upon it. By adjusting the values for the magnetic and electric fields‚ we will be able to check the different paths the electron follows. From this data we will be able to calculate the charge-to-mass ratio. Then
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potential—creating an electric field)‚ thus emerging with kinetic energy‚ K‚ equal to the product of the electron’s charge‚ e‚ and the voltage‚ V (potential difference). Assuming they are emitted with negligible energy‚ where m is the mass of the electron‚ in this case. After emerging from the hole in the anode‚ the electrons enter a region with no electric fields‚ therefore then traveling at a constant velocity. The beam’s path is illuminated due to the ionization of the gas. A magnetic field is applied to
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electric and magnetic fields. Electromagnetism is defined the interaction between a magnetic field and an electric field. People use electromagnetic to transmit electricity to other place‚ to supply electricity form magnetic fields and to store and conserve energy. Electromagnet has components of strong interaction‚ weak interaction and gravitational. According to Hans Christian Ørsted that electricity and magnetism are linked. He proved that an electric current produces a magnetic field as it flows
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a changing electric current is surrounded by an associated changing magnetic field‚ which in turn generates a changing electrical current in a conductor placed within it‚ which has its own magnetic field…and so on. It is the electromagnetic equivalent of nesting Matryoshka dolls. Thus‚ in the case of electromagnetic induction‚ placing a conductor in the magnetic field surrounding the first current generates the second current. Electromagnetic induction was discovered independently by Michael Faraday
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