HW-_Generator_RMS_and_Transformer_HW

# 6 a transformer has 22 turns of wire in its primary

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6) A transformer has 22 turns of wire in its primary and 88 turns in its secondary. a. Is this a step-up or step-down transformer? b. If 110 V ac is applied to the primary, what is the output potential difference? c. If the primary has 100A, what is the current on the primary? 3) The maximum current that can pass through a light bulb filament is 0.909 A when its resistance is 182 Ω. a. What is the rms current conducted by the filament of the bulb? b. What is the rms potential difference across the bulb’s filament? c. How much power does the light bulb use? 4) A 996 W hair dryer is designed to carry a maximum current of 11.8 A. a. How large is the rms current in the hair dryer? b. What is the rms potential difference across the hair dryer? 5) In many transformers, the wire around one winding is thicker, and therefore has lower resistance, than the wire around the other winding. If the thicker wire is wrapped around the secondary winding, is the device a step-up or a step-down transformer? Explain. 6) A transformer has 22 turns of wire in its primary and 88 turns in its secondary. a. Is this a step-up or step-down transformer? b. If 110 V ac is applied to the primary, what is the output potential difference? c. If the primary has 100A, what is the current on the primary?
• Fall '09
• Lyons
• Alternating Current, Magnetic Field, Potential difference, Incandescent light bulb, rms potential difference

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