Physics - Semiconductors Question with Solution | TestHub

Here, the emitter-base junction of the N-P-N transistor is forward biased with battery$V_{BB}$through resistance$R$. When the value of$R$is reduced, then the base current$i_b$will increase. As a result, the collector current will also increase.$(i_c=\beta i_b)$. Due to the increase in$i_c$, the potential difference across$L$increases and hence the reading of voltmeter will increase.