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Find the value of the charging resistor in case of a UJT firing circuit with firing frequency of 2 kHz, C = 0.04 μF, η = 0.72
  • a)
    5.62 kΩ
  • b)
    37 kΩ
  • c)
    4.23 kΩ
  • d)
    9.82 kΩ
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Find the value of the charging resistor in case of a UJT firing circui...
 T = 1/f = 1/2 kHz
R = T/C ln(1/1-η).
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Most Upvoted Answer
Find the value of the charging resistor in case of a UJT firing circui...
To find the value of the charging resistor in a UJT (Unijunction Transistor) firing circuit, we need to use the formula:

Rc = 1 / (2 * π * f * C)

Where:
Rc = Charging resistor value
f = Firing frequency
C = Capacitance

Given:
f = 2 kHz
C = 0.04

Using the formula:

Rc = 1 / (2 * 3.14159 * 2000 * 0.04)
Rc = 1 / (1256.64)
Rc ≈ 0.000795 ohms

Therefore, the value of the charging resistor in this case is approximately 0.000795 ohms.
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Find the value of the charging resistor in case of a UJT firing circuit with firing frequency of 2 kHz, C = 0.04 μF, η = 0.72a)5.62 kΩb)37 kΩc)4.23 kΩd)9.82 kΩCorrect answer is option 'D'. Can you explain this answer?
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Find the value of the charging resistor in case of a UJT firing circuit with firing frequency of 2 kHz, C = 0.04 μF, η = 0.72a)5.62 kΩb)37 kΩc)4.23 kΩd)9.82 kΩCorrect answer is option 'D'. Can you explain this answer? for Electrical Engineering (EE) 2025 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Find the value of the charging resistor in case of a UJT firing circuit with firing frequency of 2 kHz, C = 0.04 μF, η = 0.72a)5.62 kΩb)37 kΩc)4.23 kΩd)9.82 kΩCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Find the value of the charging resistor in case of a UJT firing circuit with firing frequency of 2 kHz, C = 0.04 μF, η = 0.72a)5.62 kΩb)37 kΩc)4.23 kΩd)9.82 kΩCorrect answer is option 'D'. Can you explain this answer?.
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