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