Final answer:
To find the voltage drop across the load resistor in the given circuit, we need to subtract the voltage drops across the other resistors from the total voltage.
Step-by-step explanation:
The circuit shown is a series circuit, where the total voltage across the resistors is equal to the sum of the voltage drops across each resistor. To find the voltage drop across the load resistor, we need to subtract the voltage drops across the other resistors from the total voltage.
Given that Rth = 0.4 ohms, Eth = 18 volts, and Rload = 6.9 ohms, we can calculate the voltage drop:
Voltage drop across load resistor = Eth - Rth * I
Substituting the given values:
Voltage drop across load resistor = 18 - 0.4 * I
Since the value of current I is not given, we cannot determine the exact voltage drop. Therefore, we need additional information to solve the problem.