Twenty identical miniature bulbs

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

Twenty identical miniature bulbs, each of resistance 30 Ω30\,\Omega, are connected in series to a 120 V120\,\text{V} supply. What is the current through the string of bulbs? (a) 2.0 A2.0\,\text{A} (b) 0.05 A0.05\,\text{A} (c) 0.20 A0.20\,\text{A} (d) 4.0 A4.0\,\text{A}

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