Class Management Help Generator/Transformer Begin Date: 1/17/2018 1:00:00 PM Due

Question

Class Management Help Generator/Transformer Begin Date: 1/17/2018 1:00:00 PM Due Date: 4/18/2018 1:00:00 PM End Date: 4/18/2018 1:00:00 PM (2796) Problem 4: The plug-in transformer for a laptop computer puts out 7.50 V and can supply a maximum current of 1.6 A. Randomized Variables what is the maximum input current 1 p. ?n amps, if the input voltage is 240 V? Assume 100% efficiency. Grade Summary Deductions Potential 10 Submissions Attempts remaining (3% per attempt) detailed view tan() | ?|( sino cotan asinacos0 atan acotan) sinh0 coshO tanh cotanhO ? Degrees ) Radians Hint I give up Submit Feedback: 0%, deduction per feedback. | Hints: 5% deduction per hint Hints remaining: 2

Explanation / Answer

This is a step down transformer and the voltage and current are related by:

V1/V2 = I2/I1

Since input power = output power and P = VI.

240/7.5 = 1.6/I1

=> I1 = Ip = 0.05 A.

this should be the maximum input current.

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