An ideal transformer has 4500. turns in its primary (input) and 14500. turns in its secondary (output). 10.0-V ac is connected to the primary (input).
a) What is the voltage on the secondary (output)?
b) What is the secondary (output) current if an 8.00-Ω resistor is connected to the secondary (output)?
c) What is the power supplied to the primary (input)?
a)
Np = number of turns in primary= 4500
Ns = number of turns in secondary = 14500
Vp = primary Ac Voltage = 10 volts
Vs = secondary voltage
Using the equation
Vs /Vp = Ns /Np
Vs /10 = 14500/4500
Vs = 32.2 Volts
b)
Rs = resistance connected to secondary side = 8 ohm
is = current on secondary side
Using ohm's law
Vs = is Rs
32.2 = is (8)
is = 4.025 A
c)
ip = current in primary side
Using the equation
ip/is = Vs/Vp
ip/4.025 = 32.2/10
ip = 12.96 A
P = Power in primary side = ip Vp = 12.96 x 10 = 129.6 Watt
An ideal transformer has 4500. turns in its primary (input) and 14500. turns in its secondary...
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