1. The problem statement, all variables and given/known data A 75.0 W bulb is connected to a 120 V source. A lamp dimmer puts a resistance in series with the bulb. What resistance would be needed to reduce the current to .300 A? 2. Relevant equations R=V/I 3. The attempt at a solution R=120/.3A=400 ohms. The answer is 210 ohms. What am I missing?