Which is the wrong statement in the following sentences? $A$ device in which $P$ and $N$-type semiconductors are used is more useful than a vacuum tube because:
- APower is not necessary to heat the filament
- BIt is more stable
- CVery less heat is produced in it
- DIts efficiency is high due to a high voltage across the junction
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Different voltages are applied across a $P-N$ junction and the currents are measured for each value. Which of the following graphs is obtained between voltage and current?
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View SolutionIf in a $p-n$ junction diode,a square input signal of $10\, V$ (varying from $+5\, V$ to $-5\, V$) is applied as shown,then the output signal across $R_L$ will be:
MediumAIPMT 2015
View SolutionThe current through the ammeter (neglecting internal resistance) in the following circuit is
In a semiconductor diode,the forward voltage is increased from $0.5 \ V$ to $0.7 \ V$. As a result,the forward current changes by $1 \ mA$. The forward resistance of the diode is ....... $\Omega$.
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View SolutionThe barrier potential of a $p-n$ junction depends on:
$(1)$ Type of semiconductor material
$(2)$ Amount of doping
$(3)$ Temperature
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$(1)$ Type of semiconductor material
$(2)$ Amount of doping
$(3)$ Temperature
Which one of the following is correct?
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