We need to produce HTML article with h2, h3, p, ul, ol, li, strong, em. No markdown fences. Must be 600-900 words. Natural headings. Use the context but not directly copy. We must not mention AI. Write original article about "Series Vs Parallel Circuit Worksheet". Include SEO-friendly. Use safe HTML tags only. Provide headings like h2, h3. Use strong and em. Use bullet lists etc. Word count 600-900. Let's aim around 750 words. We need to incorporate context: mention series, parallel, batteries, lightbulbs, Jared, path electricity, video tutorial, website https://www.cognito.org/, mention series vs parallel worksheet, solving, going over question 2, explanation of, support, Patreon. But we can't mention AI. Just produce article. We need to ensure we only use allowed tags: h2, h3, p, ul, ol, li, strong, em. No other tags like div, etc. Use only these tags. No markdown fences. Provide only safe HTML. Let's craft. Word count: need to count approximate words. Let's draft about 750 words. Structure:

Understanding Series vs Parallel Circuit Worksheet

Why Knowing the Difference Matters

etc. Include bullet lists with