Final answer:
The βDC of a transistor with IC of 20.3 mA and IE of 20.5 mA is calculated to be approximately 101.5. The closest answer from the given options is D) 102.5.
Step-by-step explanation:
We have been asked to calculate the βDC (DC current gain) of a transistor given the collector current (IC) and the emitter current (IE). To find the βDC, one must use the formula βDC = IC / IB, where IC is the collector current and IB is the base current.
However, IB can be calculated by subtracting IC from IE as IB = IE - IC. Using the given values, IC = 20.3 mA, and IE = 20.5 mA, we first find IB = IE - IC = 20.5 mA - 20.3 mA = 0.2 mA. We can then calculate βDC = IC / IB = (20.3 mA) / (0.2 mA) = 101.5. The answer that is closest to this calculated value is D) 102.5.
A transistor is a semiconductor device used in electronic circuits for amplification, switching, and control of electrical signals. It's a fundamental building block of modern electronics and has revolutionized the field of technology due to its versatility and reliability.