Complete these sentences using while. пример: the plates of a fixed capacitor cannot be moved to vary the capacity while the plates of a variable capacitor can be moved to vary the capacity 1) the secondary winding of a transformer is connected to the load 2) the primary winding receives 3) a step-down transformer decreases the primary 4) an air core transformer is used for hight-frequency 5) in step-up transformer the number of turns of the secondary winding is greater than the number of turns of the primary