Concept explainers
(a)
The time when the light flash.
(a)
Answer to Problem 82GP
The time when the light flash is 0.686 s.
Explanation of Solution
Given information:
Capacitance,
Resistance,
Voltage,
Emf,
Formula Used:
The formula is given by,
Here,
Calculation:
Solve the above equation.
Substitute the values in the above equation.
Conclusion:
Thus, the time when the light flash is 0.686 s.
(b)
The time when value of R is increased.
(b)
Answer to Problem 82GP
The time will also increase when value of R is increased.
Explanation of Solution
Given information:
Capacitance,
Resistance,
Voltage,
Emf,
Formula Used:
The formula is given by,
Here,
Calculation:
Refer the above equation.
The R and t are directly proportional to each other, so time will also increase when value of R is increased.
Conclusion:
Thus, the time will also increase when value of R is increased.
(c)
The reason for the brief flashing.
(c)
Answer to Problem 82GP
The reason for the brief flashing is that the neon lamp acts like a wire.
Explanation of Solution
Given information:
Capacitance,
Resistance,
Voltage,
Emf,
Formula Used:
The formula is given by,
Here,
Calculation:
When the threshold voltage is reached, the neon lamp acts like a wire with the minimal resistance.
Conclusion:
Thus, the reason for the brief flashing is that the neon lamp acts like a wire.
(d)
The condition after the lamp flashed for the first time.
(d)
Answer to Problem 82GP
The flash time is 0.686 s which is the time taken by the capacitor to discharge the capacitor.
Explanation of Solution
Given information:
Capacitance,
Resistance,
Voltage,
Emf,
Formula Used:
The formula is given by,
Here,
Calculation:
The flash time is 0.686 s which is the time taken by the capacitor to discharge the capacitor and then charge to the threshold voltage.
Conclusion:
Thus, the flash time is 0.686 s which is the time taken by the capacitor to discharge the capacitor.
Chapter 19 Solutions
Physics: Principles with Applications
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