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A transformer connected to a 125 V (rms) ac line is to supply 12000 V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 5.00 mA. (a) What is the ratio of secondary to primary turns of the transformer? (secondary/primary) (b) What power must be supplied to the transformer when the rms secondary current is 5.00...

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A transformer connected to a 120-V (rms) ac line is to supply 13,000 V (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 8.50 mA. What current rating should the fuse in the primary circuit have? (Points : 20)

• ### A 120 V (rms) power line is connected to the primary of a step-down transformer, with...

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• ### The 200- turn primary coil of a step‑down transformer is connected to an AC line that...

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A transformer connected to a 120V (rms) AC line is to supply 12 kV (rms) for a neon sign. To reduce shock hazard, a fuse is to be inserted in the primary circuit; the fuse is to blow when the rms current in the secondary circuit exceeds 2.0 mA. What is the current (rms) in the primary circuit when the fuse blows?

• ### The primary 40-turn coil of an ideal transformer is supplied with 120 V (rms). If the...

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• ### An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage...

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• ### A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary...

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• ### A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is...

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