Answer & Solution
Answer: Option D
Solution:
The load current is determined by analyzing the circuit and applying Ohm's law and the voltage-divider principle.
Given:
Load resistance, R
L = 680 Ω
Internal source resistance, R
S = 12 kΩ = 12,000 Ω
Constant current source, I
S = 1.2 A
Step 1: Determine the total voltage of the circuit
The total voltage generated by the current source is:
V
total = I
S × R
S = 1.2 A × 12,000 Ω = 14,400 V
Step 2: Calculate the equivalent resistance
The load resistor and internal source resistance form a voltage divider. The voltage across R
L is calculated as:
V
L = V
total × (R
L / (R
L + R
S))
V
L = 14,400 × (680 / (680 + 12,000))
V
L = 14,400 × (680 / 12,680) = 774 V
Step 3: Find the load current
The load current is:
I
L = V
L / R
L = 774 / 680 = 1.14 A
