Transformers are used to change ____ and currents in transmission lines. A ____ is formed from two ____ of wire around a magnetic core, usually made of ____. The number of ____ of wire in the coils determines whether the transformers will ____ or step-down the voltage. Step-up transformers have ____ loops around the secondary coil. Step-down transformers have more loops around the ____ coil. Step up transformers allow us to ____ the voltage which allows us to transmit electricity at lower currents meaning less ____ is wasted. Very high voltages are dangerous though as they are more likely to cause ____. Step down transformers reduce the voltage to ____ before electricity enters our homes and businesses. Many electronic devices need a charger which will contain another ____ transformer to lower the voltage even further.

Transformers

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