Q136. In a transistor circuit, the base current changes from 45 µA to 140 µA, causing the collector current to change from 0.2 mA to 4.0 mA. What is the current gain (β)?Physics — NUST Mock By IBAGRADS 5 — Question 136 of 200A. 9.5B. 1C. 40D. 20Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →