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 mA?

W

(c) What current rating should the fuse in the primary circuit have?

A

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