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When two dissimilar metals come into contact as in the case of copper and ferrous due to diffusion electrons get migrated right from one to the other and so a potential of the order of few volts is created. This is called junction potential. This plays an important role in giving thermo emf for a thermo couple
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A folded region of the sarcolemma at the neuromuscular junction?
At the neuromuscular junction (or presynaptic end) of the sarcolemma, it is referred to as end plate synapse potential.
When an action potential arrives at the neuromuscular junction the most immediate response?
acetylcholine is released
What two structures are closely associated at the neuromuscular junction?
I think it might be Nerve Stimulus and Action Potential
Are junction boxes normally used in wiring the first floor of a house?
The area of a home has nothing to do with wear a junction box is placed. A junction box is placed wear a junction box is needed to split a circuit. any splice SHALL be in a junction box a junction box SHALL be accessable
How does the neural signal get across the neuromuscular junction?
a neurotransmitter chemical crosses the junction.
Why potential across pn junction is called potential barrier?
The potential across a pn junction is called potential barrier because majority charge carriers have to overcome this potential before crossing the junction.
Diffusion potential in p-n junction?
The built in potential in a pn junction. Due to the difference in carrier concentration between the sides of a pn junction. Diffusion potential increases with increase in doping levels.
What is meant by 0.3 volts for germanium and 0.7 volts for silicon?
== When we make a semiconductor junction (a p-n junction), the electric fields force charges to shift creating what is called a depletion region. This depletion region forms a potential barrier across the junction. This potential barrier has a voltage associated with it, and that voltage is 0.3 volts (approximately) for germanium semiconductor material, and 0.7 volts (approximately) for silicon semiconductor. The terms we apply to this barrier potential are the built-in voltage (or potential), junction voltage (or potential), and contact potential. Use the link below to check facts and review some other closely related material.
A folded region of the sarcolemma at the neuromuscular junction?
At the neuromuscular junction (or presynaptic end) of the sarcolemma, it is referred to as end plate synapse potential.
When an action potential arrives at the neuromuscular junction the most immediate response?
acetylcholine is released
How is a potential barrier formed?
when a p-n junction is formed electrons from the neutral N type goes to neutral P type. In the junction there will not be any electron or hole. In the junction because of earning electrons, P side becomes negative(ion) , & N side becomes positive(ion). So there will be a potential deference . This is known as the BARRIER......
How built-in potential barrier is formed in an open circuited P-N junction?
depletion layer surrounding the junction where electrons from N side have fallen into holes from P side.
Why KCL in salt bridge minimise liquid junction potential?
A liquid junction potential is a potential difference between two solutions caused by the diffusion of an ion faster than the other. Salt bridges between these solutions containing high concentration of salts (eg. KCl, KNO3, NH4NO3) with ions that diffuse at the same rate minimising this effect.
What happen when voltage across the pn junction increases?
If the potential across the junction is high enough, then it could cause it to conduct. This is with all diodes and is the forward voltage. If it is not high enough, it will just sit there and not conduct.
How does a diode produce light?
When light falls on the junction of a pn junction/diode the potential barrier gets break down due to majorty of electrons flow and they release energy in the form of light.
Why potential barrier is generated in semiconductor?
when the p-type and n-type material joined together the electrons and holes near the junction(joining point of p & N type) jumped to other side the electrons in N-type fill holes in P-type near the junction so a depleted(non nonconducting ions) accumulated at the junction now if any of charge wanna move in other junction it has to break this wall so that's y potential barrier developed
Why the depletion layer becomes very thick when then pn junction diode is lightly doped?
When the pn junction is forward biased,the height of the potential barrier is reduced allowing more majority charge carriers ti flow across the junction and when it is reversed biased, the height of the potential barrier increases there b reducing the majority charge carrier that have sufficient energy to flow across the junction.
