SUMMARY
The maximum potential difference that can be applied between points A and B in a circuit with three 100-ohm resistors is 75V. This conclusion is derived from calculating the maximum current of 0.5A that can safely flow through the first resistor, using the formula P=I²R. The equivalent resistance of the circuit is 150 ohms, leading to the voltage calculation V=IR, which confirms that 150 ohms multiplied by 0.5A results in 75V. The initial incorrect calculation of 61V stemmed from misapplying the power rating to the equivalent resistor instead of the individual resistor.
PREREQUISITES
- Understanding of Ohm's Law (V=IR)
- Familiarity with power formulas (P=V²/R and P=I²R)
- Knowledge of series and parallel resistor configurations
- Basic circuit analysis skills
NEXT STEPS
- Study series and parallel resistor combinations in detail
- Learn about power ratings and their implications in circuit design
- Explore advanced circuit analysis techniques, such as mesh and nodal analysis
- Investigate safety limits in electrical components and their applications
USEFUL FOR
Students studying electrical engineering, hobbyists building circuits, and anyone interested in understanding resistor configurations and power calculations in electronics.
