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Six vectors (a through f) have the magnitudes and directions indicated in the figure.
Rank the vectors combinations on the basis of their magnitude. Rank from largest to smallest. To rank items as equivalent, overlap them.
The wires all have the same resistance; the length and radius of each wire are noted. Rank in order, from largest to smallest, the resistivities ρ1 to ρ5 of these wires. Rank from largest to smallest. To rank items as equivalent, overlap them.
31.36. A Step-Up Transformer. 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. a) What is the ratio of sec- ondary to primary turns of the transformer? (b) What power must be supplied to the transformer when the rms secondary current is 8.50 mA? (c) What current rating should the fuse in the primary circuit have?