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What Electrical Quantity Cannot Be Changed by a Transformer

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What electrical quantity cannot be changed by a transformer?

Definitions:

Round Off

The process of making a number simpler but keeping its value close to what it was, often by increasing or decreasing to the nearest value of a specified unit.

Multiply

To multiply means to increase or combine by a factor or multiple, often used in mathematics to find the product of two numbers.

Pickup Truck

A light-duty vehicle with an enclosed front cab and an open cargo area, commonly used for transport.

Miles

Miles, a unit of length, are commonly used to measure distances between geographical locations.