BEE Basic Electrical 2

Question 1

A resistor of 10 Ω is connected in parallel with another resistor of 40 Ω. What is the equivalent resistance?

Accepted Answer

8 Ω

Answer

For parallel resistors: 1/R = 1/10 + 1/40 = 5/40, so R = 8 Ω.

Question 2

Which of the following best describes the behavior of an inductor in a DC steady-state circuit?

Accepted Answer

It acts as a short circuit

Answer

In DC steady state, the inductor has no changing current, so its voltage drop is zero — it acts as a short circuit (wire).

Question 3

If the voltage across a 5 Ω resistor is 20 V, what is the power dissipated?

Accepted Answer

80 W

Answer

P = V²/R = 400/5 = 80 W.

Question 4

Kirchhoff's Current Law (KCL) is based on which conservation principle?

Accepted Answer

Conservation of charge

Answer

KCL states that the algebraic sum of currents at a node is zero, which follows from conservation of electric charge.

Question 5

A 100 μF capacitor is charged to 50 V. How much energy is stored?

Accepted Answer

0.125 J

Answer

E = ½CV² = ½ × 100×10⁻⁶ × 2500 = 0.125 J.

BEE - Bachelor of Electrical Engineering Practice Test