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Q.

Consider a series LCR circuit with an ac source then
Statement I: Kirchoff’s current and voltage laws are applicable for instantaneous values of currents and voltages in the circuit. 
Statement II: Kirchoff’s current and voltage laws application for root mean square values of currents and voltages in the circuit.

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a

Both the statements are FALSE 

b

Both the statements are TRUE

c

Statement I is TRUE and Statement II is FALSE 

d

Statement I is FALSE and Statement II is TRUE 

answer is C.

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Detailed Solution

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Kirchoff’s law are true for instantaneous values of currents and voltages only.   

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Consider a series LCR circuit with an ac source thenStatement I: Kirchoff’s current and voltage laws are applicable for instantaneous values of currents and voltages in the circuit. Statement II: Kirchoff’s current and voltage laws application for root mean square values of currents and voltages in the circuit.