A transformer has 300 turns in the primary coil and 120 in the secondary coil. P

Question

A transformer has 300 turns in the primary coil and 120 in the secondary coil.

Part A

What kind of transformer is this?

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Part B

By what factor does it change the voltage? Assume 100% efficiency.

Express your answer using three significant figures.

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Part C

By what factor does it change the current?

Express your answer using three significant figures.

A transformer has 300 turns in the primary coil and 120 in the secondary coil.

Part A

What kind of transformer is this?

What kind of transformer is this? step-up step-down

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Part B

By what factor does it change the voltage? Assume 100% efficiency.

Express your answer using three significant figures.

VsVp =

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Part C

By what factor does it change the current?

Express your answer using three significant figures.

IsIp

Explanation / Answer

What kind of transformer is this

step down. because no of turns in the secondary is less

By what factor does it change the voltage? Assume 100% efficiency.

E2=-(N2/N1) E1

so the factor is 120/300=0.4

what factor does it change the current?

i2=-i1X N1/N2=I1X300/120=-2.5i1

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