To calculate the Norton resistance for the given circuit, we need to follow a step-by-step process.

Step 1: Identify the Load Resistance
Given that the load resistance in the circuit is 5 ohms, we'll designate this as RL.

Step 2: Remove the Load Resistance
To calculate the Norton resistance, we need to remove the load resistance RL from the circuit. This means we will replace RL with a short circuit (a wire) for the purpose of analysis.

Step 3: Determine the Current
Next, we need to determine the current flowing through the short circuit, which is the current that would flow through RL. We can use Ohm's Law to calculate this current. Let's assume the voltage across the short circuit is Vsc.

Vsc = I * RL

Step 4: Calculate the Short Circuit Current
Since the load resistance RL is replaced with a short circuit, the current flowing through the short circuit is equal to the Norton current. Therefore, we can write:

In = I

Step 5: Calculate the Equivalent Resistance
To calculate the Norton resistance, we need to calculate the equivalent resistance of the entire circuit, excluding the load resistance RL. This can be done by analyzing the circuit and performing the necessary calculations.

Step 6: Replace the Load Resistance
Finally, we replace the short circuit with the original load resistance RL.

Step 7: Final Result
The Norton resistance is the equivalent resistance of the circuit with the load resistance RL replaced by a short circuit.

To summarize the steps:
1. Identify the load resistance RL.
2. Remove the load resistance RL.
3. Determine the current flowing through the short circuit.
4. Calculate the short circuit current.
5. Calculate the equivalent resistance of the circuit.
6. Replace the short circuit with the load resistance RL.
7. The Norton resistance is the equivalent resistance of the circuit with the load resistance RL replaced by a short circuit.

By following these steps, you will be able to calculate the Norton resistance for the given circuit.