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In a black box of unknown elements (L, C or R or any other combination) an AC voltage 
is applied and current in the circuit was found to be 
Then the unknown elements in the box may be:
is applied and current in the circuit was found to be Then the unknown elements in the box may be:
- a)only capacitor
- b)only resistor
- c)either capacitor, resistor and inductor or only capacitor and resistor
- d)inductor and resistor both
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
In a black box of unknown elements (L, C or R or any other combination...
If we have all R, L and C then I vs, E will be :
To obtain a leading phase difference of
if XL < XC and we use all R, L and C in the circuit,
then the resultant graph will be :
To obtain a leading phase difference of
if XL < XC and we use all R, L and C in the circuit,
then the resultant graph will be :
which can give a leading phase difference of π/4.
Similarly if we have only resistance and capacitor then we can obtain a phase difference of π/4.
(leading) for suitable values of I, XC and R. But we cannot obtain a leading phase difference of π/4. If we use only capacitor (phase difference of π/2), or only (inductor and resistor) (phase difference of π/2), or only resistor (phase difference of 0).
Similarly if we have only resistance and capacitor then we can obtain a phase difference of π/4.
(leading) for suitable values of I, XC and R. But we cannot obtain a leading phase difference of π/4. If we use only capacitor (phase difference of π/2), or only (inductor and resistor) (phase difference of π/2), or only resistor (phase difference of 0).
The correct answer is: either capacitor, resistor and inductor or only capacitor and resistor
Most Upvoted Answer
In a black box of unknown elements (L, C or R or any other combination...
If we have all R, L and C then I vs, E will be :
To obtain a leading phase difference of
if XL < XC and we use all R, L and C in the circuit,
then the resultant graph will be :
To obtain a leading phase difference of
if XL < XC and we use all R, L and C in the circuit,
then the resultant graph will be :
which can give a leading phase difference of π/4.
Similarly if we have only resistance and capacitor then we can obtain a phase difference of π/4.
(leading) for suitable values of I, XC and R. But we cannot obtain a leading phase difference of π/4. If we use only capacitor (phase difference of π/2), or only (inductor and resistor) (phase difference of π/2), or only resistor (phase difference of 0).
Similarly if we have only resistance and capacitor then we can obtain a phase difference of π/4.
(leading) for suitable values of I, XC and R. But we cannot obtain a leading phase difference of π/4. If we use only capacitor (phase difference of π/2), or only (inductor and resistor) (phase difference of π/2), or only resistor (phase difference of 0).
The correct answer is: either capacitor, resistor and inductor or only capacitor and resistor
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In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer?
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In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer?.
In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer?.
Solutions for In a black box of unknown elements (L, C or R or any other combination) an AC voltage is applied and current in the circuit was found to be Then the unknown elements in the box may be:a)only capacitorb)only resistorc)either capacitor, resistor and inductor or only capacitor and resistord)inductor and resistor bothCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Physics.
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