AdvancedA-004-004-003

When discussing a power supply the_______ resistance is equal to the output voltage divided by the total current drawn, including the current drawn by the bleeder resistor:

D
Answer
Measurements and troubleshooting
Type
A
rectifier
B
differential
C
ideal
D
load

Answer Notes

According to Ohm's Law (R = V/I), the total resistance of a circuit is the total voltage divided by the total current. In the context of a power supply, everything connected across the output terminals constitutes the total load on the supply. This includes the external device being powered as well as any internal components drawing current, such as a bleeder resistor. Therefore, the 'load resistance' is calculated by taking the output voltage and dividing it by this total drawn current. Options like 'differential' or 'ideal' resistance refer to theoretical or dynamic parameters rather than the actual macroscopic DC resistance presented to the power supply.
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In any regulated power supply, the output is cleanest and the regulation is best:
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The regulation of long-term changes in the load resistance of a power supply is called: