Return to Blackboard Halliday, Fundamentals of Physics, 10e Help I System Announ

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Return to Blackboard Halliday, Fundamentals of Physics, 10e Help I System Announcements (u Unread) BACK Chapter 31 Problem 063 A transformer has 47o primary turns and 9.7 secondary turns. (rms), whatis with an open circuit? If the secondary now has a resistive what is (a) If vo is 120 v the current in the (b) primary and (c) secondary? (a) Number Units (b) Number Units (c) Number Units click if you would like to show work for this question: Open Show Work LINK TO SAMPLE PROBLEM By accessing this Question Assistance, you will learn while you eam points based on the Point Potential Policy set by your instructor Question Attempts: o of 4 used SAVE FOR LATER SUBMIT ANSwER copyright o 2000-2017 by John Wiley & Sons, inc. or related companies. All nghts reserved.

Explanation / Answer

here,

number of turns in primary , Np = 470 turns

number of turns in seccondary , Ns = 9.7 turns

a)

Vp = 120 V

Vs = Vp * ( Ns/Np)

Vs = 120 * ( 9.7 /470)

Vs = 2.48 V

b)

resistance in seccondary , Rs = 22 ohm

the current in seccondary , Is = Vs /Rs = 0.1127 A

the current in primary be Ip

Vp * Ip = Vs * Is

120 * Ip = 2.48 * 0.1127

Ip = 2.3 * 10^-3 A

c)

the current in seccondary , Is = Vs /Rs = 0.1127 A

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