A disk drive plugged into a 120-V outlet operates on a voltage of 9.0 V. The transformer that p

step 1 Hi, here in this given problem, voltage required by the disk driver which will serve as the outp

A disk drive plugged into a 120-V outlet operates on a...

A disk drive plugged into a $120-\mathrm{V}$ outlet operates on a voltage of $9.0 \mathrm{~V}$. The transformer that powers the disk drive has 147 loops on its primary coil. (a) Should the number of loops on the secondary coil be greater than or less than 147? Explain. (b) Find the number of loops on the secondary coil.

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Key Concepts

Transformer

A transformer is an electrical device that transfers energy between circuits using electromagnetic induction. Its primary purpose is to change voltage levels, either stepping them up or stepping them down, depending on the specific requirements of a system.

Voltage Transformation

Voltage transformation is the process of altering the voltage level from one value to another. In an ideal transformer, the ratio of the primary voltage to the secondary voltage is equal to the ratio of the number of turns in the primary coil to the number of turns in the secondary coil.

Turns Ratio

The turns ratio is the fundamental concept in transformers that links the number of windings (loops) in the primary and secondary coils to their respective voltages. It is mathematically represented as Vp/Vs = Np/Ns, where V is voltage and N is the number of turns.

Step-down Transformer

A step-down transformer reduces a higher input voltage to a lower output voltage by having fewer turns on the secondary coil than on the primary coil. This design is critical for safely powering devices that require a lower operating voltage than the available supply.

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