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What is an equipotential surface?
It's a surface over which electric charges are evenly distributed, caused by the mutual repulsion between charges of the same polarity.
Why TEM wave is not supported by hollow waveguide?
Arif Ullah khan utman kheel this is because for conductor E parallel is zero this means that the surface of the wave guide is at equipotential and this potential follow the laplace equation .it means that there is no maxima and minima inside the wave guide . this means that the electric field inside zero . hence the TEM do not exist in wave guide only TE and TM can be exist . if we place some conductor in the wave guide then the conductor inside will not be equipotential and the TEM waves can be exist . like in Coaxial cables
Why TEM mode does not exist in waveguide?
for TEM u need to a magnetic field (H) linked to an electric field .for this u need to a J relative to E (E=sigma J). because [curl H = J] but optical fiber is dielectric wave guide and sigma is zero and u only have dD/dt so there isn't H linked to E.
What is a grounded conductor used for and what color is it required to be by NFPA 70 the national electric code?
A grounding conductor is a means for providing safety for users of electrical devices that may have experienced an internal failure that causes an electrical short to metallic surfaces. In theory, such a short to a GROUNDED surface would quickly result in overcurrent or ground-fault interruption of the circuit, resulting in an dead but safe circuit. NEVER "reset" a GFCI while holding the attached device or without discovering what caused it to trip. Were it not for a grounding conductor, the user could become the "grounding conductor" by accident, causing electrocution. Grounding conductors maybe bare (copper) wires or have green insulation, or green with a yellow stripe (also used for bonding) or other green markings (green screws, green clips, green wire nuts, etc). Grounded appliance plugs were not required in the NEC until the 1960s.
What causes resistance to increase or decrease?
Voltage, if voltage is increased resistance in the circuit increasesAnswerResistance is determined by the length, cross-sectional area, and resistivity of a conductor. Resistivity is, in turn, affected by temperature -so temperature indirectly affects resistance.These are the only factors that affect resistance. Voltage and current have no direct effect whatsoever on resistance. Current can affect resistance indirectly if it causes the conductor's temperature to increase.For AC circuits, 'skin effect', due to frequency, causes the current to flow towards the surface of a conductor which acts to reduce the effective cross-sectional area of that conductor. So, frequency can also indirectly affect resistance.
Why must electric field line be perpendicular to equipotential surfaces?
If the field lines were not perpendicular to the surface, then they could be decomposed into components perpendicular and parallel to the surface. But if there is an E-field along the surface, the surface is no longer an equipotential.
Why aconductor is an equipotential surface?
A conductor is an equipotential surface because the electric field inside a conductor is zero in electrostatic equilibrium. This means that all points on the conductor have the same electric potential, making it an equipotential surface. Any excess charge on the conductor redistributes itself to ensure this equal potential.
What is the shape of equipotential surface due to a point charge?
concentric spherical surfaces
Is the inside of a conductor equipotential?
In electrostatic equilibrium, the inside of a conductor is equipotential. This means that the electric potential is constant at all points within the material of the conductor. Any excess charge on the surface of the conductor would redistribute itself to ensure that the entire interior remains at the same potential.
What does equipotential mean?
Equipotential refers to a surface where all points have the same electrical potential. In physics, this means that the work done in moving a charge from one point to another along that surface is zero. Equipotential surfaces are used to visualize and analyze electric fields.
Under what conditions will a surface be an equipotential surface?
A surface will be an equipotential surface when the electric potential is the same at all points on the surface.
What is the significance of an equipotential surface in a gravity field and how does it relate to the distribution of gravitational potential energy?
An equipotential surface in a gravity field is a surface where the gravitational potential energy is the same at all points. This means that no work is required to move an object along this surface. The significance of an equipotential surface is that it helps us understand the distribution of gravitational potential energy in a gravity field. The distribution of gravitational potential energy is related to the shape and orientation of equipotential surfaces, with steeper gradients indicating higher potential energy differences.
Why TEM modes does not exist in wave guides?
Arif Ullah khan utman kheel this is because for conductor E parallel is zero this means that the surface of the wave guide is at equipotential and this potential follow the laplace equation .it means that there is no maxima and minima inside the wave guide . this means that the electric field inside zero . hence the TEM do not exist in wave guide only TE and TM can be exist . if we place some conductor in the wave guide then the conductor inside will not be equipotential and the TEM waves can be exist . like in Coaxial cables
How do equipotential surfaces in a capacitor contribute to the distribution of electric potential within the capacitor?
Equipotential surfaces in a capacitor help distribute the electric potential evenly within the capacitor. This means that the electric potential is the same at all points on a particular equipotential surface. This distribution of electric potential helps maintain a stable and uniform electric field within the capacitor, allowing for efficient storage and transfer of electrical energy.
What is the work done in moving a charge of 10 nC between two points on an equipotent surface?
The work done in moving a charge on an equipotent surface is zero. This is because the potential is constant along equipotential surfaces, so there is no change in potential energy as the charge moves between points on the surface. Therefore, the work done is zero.
Are the field lines for the parallel electrodes parallel everywhere?
For parallel electrodes, the field lines are all parallel to each other, since each electrode acts as an equipotential surface, meaning it has the same potential throughout its entire surface, except at the ends, where the field lines are no longer parallel to the other field lines. Hope this helps!
What is the geometrical shape of equipotential surface due to single isolated charge?
what is the geometrical shape of equipotential surface due to single isolated charge
