A 6 V, 12 W lamp is connected in series with a resistor R and a source of voltage 12 V.
What is the purpose of the resistor R?

Explanation

To solve the question regarding the purpose of the resistor R in the circuit with a 6 V, 12 W lamp connected in series with a 12 V source, we can break it down into the following steps:

### Step 1: Understand the Components
- We have a lamp rated at 6 V and 12 W.
- The lamp is connected in series with a resistor R and a 12 V power source.

### Step 2: Determine the Current through the Lamp
- First, we need to calculate the current that the lamp will draw when it operates at its rated voltage.
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