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Solution


Q.

Given below are two statements:                              [2023]

Statement I: When the frequency of an a.c. source in a series LCR circuit increases, the current in the circuit first increases, attains a maximum value and then decreases.

Statement II: In a series LCR circuit, the value of power factor at resonance is one.

In the light of given statements, choose the most appropriate answer from the options given below:
1 Statement I is incorrect but Statement II is true  
2 Both Statement I and Statement II are false  
3 Statement I is correct but Statement II is false  
4 Both Statement I and Statement II are true  

Ans.

(4)

Both statements are correct. Theory based.