an-electric-transformer-with-an-efficiency-rate-of-75-is-hooked-up-to-a-120-v-ac

Question

An electric transformer with an efficiency rate of 75% is hooked up to a 120-V AC source. The secondary coil is linked to a 60-W lamp with a resistance value of 3-Ω. (a) What is the current flowing through the primary coil of the transformer? (b) What is the winding ratio of this transformer?

Accepted Answer

Current: 0.67 A, Ratio: 8.9:1

Answer

Current: 1.67 A, Ratio:10:1

Answer

Current: 2.5 A, Ratio: 9.2:2

Answer

Current: 2.9 A, Ratio: 10:2

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An electric transformer with an efficiency rate of 75% is hooked up to a 120-V AC source. The secondary coil is linked to a 60-W lamp with a resistance value of 3-Ω. (a) What is the current flowing through the primary coil of the transformer? (b) What is the winding ratio of this transformer?