a.) The primary coil of a transformer has 601,504 loops. The secondary coil has
ID: 2014654 • Letter: A
Question
a.) The primary coil of a transformer has 601,504 loops. The secondary coil has 322,319 loops. The primary coil has a current of 96 A & a voltage of 93 V. Determine the current & voltage of the secondary.secondary current = ___________ A
secondary voltage = ___________ V
b.) You are standing on a canyon edge and you give a shout. After 4.7 s have passed, you hear your echo. The temperature at the canyon is 8.6 °C. Determine the speed of sound & how far away the wall is that your voice bounced off of.
Speed of sound = ____________________m/s
Distance to cliff wall = _________________m
c.) Calculate the electrostatic force between a -897 µC charge and a +83 µC charge that are 67 cm part.
ANSWER:_________________N
d.) A diverging mirror is being used to look at an object. The focal length is -725 ft and the object distance is 21 ft. Determine the image distance and the magnification.
image distance = __________ ft
magnification = ____________
Explanation / Answer
the ideal transformer equation
Vs/Vp=Ns/Np=Ns/Np
since the current of the primary coil is 96 A and the voltage of the primary coil is 93 V,
(1)
the voltage of the secondary coil is
Vs= Vp(Ns/Np)
= (93V)(322319/601504)
= 49.83 V
(2)
the current of the secondary coil is
Is= Ip/(Ns/Np)
= (96A)/(322319/601504)
=179.15 A
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