Class 4 (4th Engineer) MET 📅 Jan 2024

Exam Question

(a) Differentiate between resistance, inductance and impedance in an a.c. circuit. (6)

(b) A circuit is made up from four resistors of value 2R, 4R, 5R and 10R connected in parallel. If the current is 8.6A, find the voltage drop across the arrangement and the current in each resistor. (10)

Reference Answer

### Part (a): Differentiation between Resistance, Inductance, and Impedance
A full-mark answer requires a detailed comparison of the physical properties, mathematical representations, and effects on an AC circuit for each term.
#### 1. Resistance (R)
* **Definition:** Resistance is the opposition to the flow of steady electric current (both AC and DC). It is a measure of a component's ability to resist the flow of electrons.

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