Transformers are used to change ____ and currents in transmission lines. A ____ is formed from two ____ of wire around a ____ core. The number of coils ____ whether the transformers will ____ or step-down the voltage. Step-up transformers have ____ loops around the secondary coil. ____ transformers have more loops around the ____ coil. If too much ____ flows through the ____ cables they heat up and ____ energy making them less ____. Step up transformers allow us to ____ the voltage which allows us to transmit electricity at ____ currents meaning less ____ is wasted. Very high voltages are ____ though as they are more likely to cause ____. Step down transformers reduce the voltage to ____ before electricity enters our homes and businesses, this is much ____.

Transformers

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