Electrical Power (P = VI)

The Electrical Power (P = VI) is a go-to tool whenever you need to calculates real, apparent, and reactive power for single- or three-phase systems.. It focuses on kW, kVA, three phase, which means searchers often arrive with intent-heavy queries like “how to electrical power (p = vi) quickly” or “electrical power (p = vi) formula explained.” Use this calculator to capture those intents and keep learners on the page long enough to send positive engagement signals.

Under the hood, the calculator leans on the calculator multiplies by √3 whenever you choose three-phase, so you only worry about line-to-line voltage and line current inputs.—that’s why we surface the full expression (“S = V·I·(√3 for 3φ) P = S × PF Q = √(S² − P²)”) directly above the interactive widget. When you embed that formula inside H2s or supporting paragraphs, you help both humans and crawlers understand what entity the page represents.

Execution matters as much as the math. Follow the built-in procedure: Step 1: Select single-phase or three-phase. Step 2: Enter voltage, current, and power factor. Step 3: Review kW, kVA, kVAR, and the resulting power factor to size conductors or transformers appropriately.. Each numbered instruction is short enough to scan on mobile but descriptive enough to satisfy Google’s Helpful Content guidelines. Encourage students to jot down units, double-check signs, and compare answers with the Example card to build confidence.

The Example section itself is packed with semantic clues: “Three-phase, 480 V, 40 A, PF = 0.92” leading to “Real ≈ 30.6 kW, Apparent ≈ 33.3 kVA, Reactive ≈ 13.1 kVAR.” Pepper similar narratives throughout your copy (and internal links from related guides) so canonical search intents are answered without pogo-sticking back to Google.