Question

1. norton current in this circuit equals

a 20a
b 2.5a
c 3.0a
d 3.5a

Explanation:

Step1: Short - circuit terminals A and B

When A and B are short - circuited, R2 and RL are in parallel with respect to the source. The voltage source is 25V and R1 = 10Ω, R2=10Ω, RL = 10Ω.

Step2: Calculate the current through R2

The voltage across R2 is 25V. Using Ohm's law \(I=\frac{V}{R}\), for R2, \(I_{R2}=\frac{25}{10}=2.5A\).

Step3: Determine Norton current

The Norton current \(I_N\) is the current through the short - circuit between A and B. Since R2 and RL are in parallel when A and B are short - circuited and the voltage across them is 25V, and \(I_{R2}=\frac{25}{10} = 2.5A\), the Norton current \(I_N = 2.5A\).

Answer:

B. 2.5A