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A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will be
- a)1.4 mJ in the former and 8.4 mJ in later
- b)1.4 mJ in the former and 7 mJ in later
- c)8.4 mJ in the former and 1.4 mJ in later
- d)50 mJ in the former and 1.4 mJ in later
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
A 10 μF capacitor is charged full by 100 V dc source. It is then co...
Given, C1 = 10μF
and C2 = 50 μF; V = 100 volt
Initial energy stored in the capacitor of 10 μF is
= 0.05 Joules
The initial charge,
Qin = CV = 10 x 10-6 x 100
= 0.001 Coulomb
When this 10 μF capacitor is connected across the unchanged capacitor, let the final voltage be V' volt.
Then,
and
Again
where, Q is the final charge and C is the final capacitance.
Now, Q = Qin = 0.001 Columb
and Ceq = C - C1 + C2
= 10 + 50 = 60 μF
Hence, final voltage
Thus,
= 0.0014 J = 1.4 mJ
and
= 0.007 J = 7 mJ
and C2 = 50 μF; V = 100 volt
Initial energy stored in the capacitor of 10 μF is
= 0.05 Joules
The initial charge,
Qin = CV = 10 x 10-6 x 100
= 0.001 Coulomb
When this 10 μF capacitor is connected across the unchanged capacitor, let the final voltage be V' volt.
Then,
and
Again
where, Q is the final charge and C is the final capacitance.
Now, Q = Qin = 0.001 Columb
and Ceq = C - C1 + C2
= 10 + 50 = 60 μF
Hence, final voltage
Thus,
= 0.0014 J = 1.4 mJ
and
= 0.007 J = 7 mJ
Most Upvoted Answer
A 10 μF capacitor is charged full by 100 V dc source. It is then co...
A 10 is a numerical value that represents the quantity or measurement of something. It could refer to various things depending on the context. For example, it could represent a rating on a scale of 1 to 10, where 10 is the highest score. It could also represent the number of items in a set, or the value of a variable in a mathematical equation.
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A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer?
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A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer?.
A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer?.
Solutions for A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
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A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A 10 μF capacitor is charged full by 100 V dc source. It is then connected across an uncharged capacitor of 50 μF capacity. The energy stored in the two capacitors in the final state will bea)1.4 mJ in the former and 8.4 mJ in laterb)1.4 mJ in the former and 7 mJ in laterc)8.4 mJ in the former and 1.4 mJ in laterd)50 mJ in the former and 1.4 mJ in laterCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
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