*Question G7A01:
What is the function of a power supply bleeder resistor?*  

*Correct Answer is  B: It discharges the filter capacitors when power is removed*  

### AI Response: (may contain errors)  

A power supply bleeder resistor is used to ensure safety by discharging the filter capacitors when the power is removed. Here's why the correct answer is correct and the others are not:

1. **Correct Answer (B):**  
   - **Function:** The bleeder resistor is connected across the filter capacitors in a power supply. Its purpose is to safely discharge the stored energy in the capacitors when the power is turned off. This prevents the risk of electric shock from residual voltage.
   - **Safety:** Without a bleeder resistor, capacitors can retain a charge for a long time, posing a shock hazard to anyone who might touch the circuit after it is powered down.

2. **Incorrect Choices:**
   - **Choice A:** A bleeder resistor does not act as a fuse. A fuse is a protective device that interrupts the circuit when excess current flows, not excess voltage.
   - **Choice C:** Induction coils are not directly related to the function of a bleeder resistor. The resistor is specifically for discharging capacitors, not dealing with induction coils.
   - **Choice D:** Ground loop currents are typically addressed by proper grounding techniques and not by using a bleeder resistor. The resistor's role is not to eliminate ground loop currents.

**Rule of Thumb:**  
- A bleeder resistor is typically chosen to have a high resistance value to minimize power loss during normal operation, yet low enough to discharge the capacitors in a reasonable time frame after power is removed.