A potential barriers of $$0.5$$ eV exists in $$p-n$$ junction. If an electron approaches the $$p-n$$ junction from the n – side with speed of $$5$$×$$105m/s$$ ,then electron will enter the P side with velocity (in$$ $$m/s)

Question

A potential barriers of $$0.5$$ eV exists in $$p-n$$ junction. If an electron approaches the $$p-n$$ junction from the n – side with speed of $$5$$×$$105m/s$$ ,then electron will enter the P side with velocity (in$$ $$m/s)

Infinity Learn · Accepted Answer

Let electron enters the n region with speed $$v1$$ and enters the P region with speed  $$v2Applying$$ conservation of energy,                                                         $$12mv12=eV+12mv22$$⇒$$12$$×$$9.1$$×$$10$$−$$31$$×$$(5$$×$$105)2=1.6$$×$$10$$−$$19$$×$$0.5+12$$×$$9.1$$×$$10$$−$$31v22$$⇒$$113.75$$×$$10$$−$$21=0.8$$×$$10$$−$$19+12$$×$$9.1$$×$$10$$−$$31v22$$⇒$$4.55$$×$$10$$−$$31v22=113.75$$×$$10$$−$$21$$ $$-$$ $$80$$×$$10$$−$$21$$⇒$$v22=33.75$$×$$10$$−$$214.55$$×$$10$$−$$31$$⇒$$v22$$ $$=$$ $$7.41$$×$$1010$$⇒$$v2$$ $$=$$ $$2.7$$×$$105$$⇒$$v2=27$$×$$104m/s$$

A potential barriers of 0.5 eV exists in p-n junction. If an electron approaches the p-n junction from the n – side with speed of $5 \times 10^{5} m / s$ ,
then electron will enter the P side with velocity (in m/s)

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A potential barriers of 0.5 eV exists in p-n junction. If an electron approaches the p-n junction from the n – side with speed of 5×105m/s ,then electron will enter the P side with velocity (in m/s)

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A potential barriers of 0.5 eV exists in p-n junction. If an electron approaches the p-n junction from the n – side with speed of $5 \times 10^{5} m / s$ ,
then electron will enter the P side with velocity (in m/s)