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A transformer has an efficiency of 80 %. Its secondary… | StemPy Lab
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A transformer has an efficiency of 80 %. Its secondary gives out 48 W. What power does the primary take?
Physics
Medium
High School (11–12)
Electricity & Magnetism › Alternating Current
NEET
A-Level
IB
Created by
StemPy Lab
A transformer has an efficiency of
80
%
80\ \%
80
%
. Its secondary gives out
48
48
48
W. What power does the primary take?
60
W
60\ \text{W}
60
W
53
W
53\ \text{W}
53
W
38
W
38\ \text{W}
38
W
5
W
5\ \text{W}
5
W
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← The core of a transformer is built from thin insulated sheets of soft iron. The main purpose of the thin sheets is to reduce
A step-down transformer changes 3300 V to 110 V. Its secondary has 35 turns. How many turns are in its primary? →
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