defence exam BSF Head Constable (RO/RM) Mock Test 2023 Physics Current, Resistance and Electricity

440 volt a.c is changed to 2200 volt a.c through a step-up transformer. If current in the primary is 5 A, the current in the secondary is :

1

1 A

2

2 A

3

0.5 A

4

1.5 A

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