A transformer consists of 250 primary windings and 806 secondary windings. Part

Question

A transformer consists of 250 primary windings and 806 secondary windings.

Part A

If the potential difference across the primary coil is 22.5 V , what is the voltage across the secondary coil?

Express your answer in volts to three significant figures.

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Part B

If the potential difference across the primary coil is 22.5 V , what is the current in the secondary coil if it is connected across a 105 resistor?

Express your answer in amperes to three significant figures.

A transformer consists of 250 primary windings and 806 secondary windings.

Part A

If the potential difference across the primary coil is 22.5 V , what is the voltage across the secondary coil?

Express your answer in volts to three significant figures.

V2 =   V  

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Part B

If the potential difference across the primary coil is 22.5 V , what is the current in the secondary coil if it is connected across a 105 resistor?

Express your answer in amperes to three significant figures.

I =   A  

Explanation / Answer

given data

V1 =22.5 v

N1= 250

N2 =806

a)

V2/V1 = N2/N1

so

V2 = V1 (N2/N1) = 22.5(806/250) = 72.54 Volts

b)

R1 = R2 (N1/N2)^2 = 105 (250/806)^2 = 10.101 ohms.

you can

we know that

I = v/r

=10.10/105= 0.0961 A

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