| Assertion (A): A step-up transformer converts input low AC voltage to output high AC voltage |
| Reason (R): it violate the law of conservation of energy. |
A) Both A and R are true and R is the correct explanation of A
B) Both A and R are true but R is NOT the correct explanation of A
C) A is true but R is false
D) A is false and R is true
Correct Answer: C
Solution :
| Option [c] is correct |
| Explanations: Step-up transformer means it converts input low AC voltage to output high AC voltage. So, the assertion is true. |
| For step up transformer, \[{{\operatorname{V}}_{OUT}}/{{\operatorname{V}}_{IN}}>1,\] but simultaneously \[{{\operatorname{I}}_{OUT}}/{{I}_{IN}}<1\]and \[{{P}_{IN}}={{\operatorname{P}}_{OUT}}\] (ideally). Hence, the law of conservation of energy is not violated. |
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