Questions
In an ideal transformer, number of turns in primary coil are 140 and that in the secondary coil are 280. If current in the primary coil is 7A, then that in the secondary coil is
detailed solution
Correct option is B
I1N1=I2N2⇒I2=I1N1N2⇒I2=7×140280=3.5ATalk to our academic expert!
Similar Questions
A step-down transformer is connected to 2400 volt line and 80 ampere of current is found to flow in output load. The ratio of the turns in primary and secondary coil is 20 : 1. If transformer efficiency is 100%, then the current flowing in the primary coil will be
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