The circuit shown in Fig. 19–84 uses a neon-filled tube as

Chapter 19, Problem 86GP

(choose chapter or problem)

The circuit shown in Fig. 19–84 uses a neon-filled tube as in Fig. 19–23a. This neon lamp has a threshold voltage \(V_{0}\) for conduction, because no current flows until the neon gas in the tube is ionized by a sufficiently strong electric field. Once the threshold voltage is exceeded, the lamp has negligible resistance. The capacitor stores electrical energy, which can be released to flash the lamp. Assume that \(C=0.150 \mu F, R=2.35 \times 10^{6} \Omega, V_{0}=90.0 \mathrm{~V}\), and \(\mathscr{E}=105 \mathrm{~V}\). (a) Assuming the circuit is hooked up to the emf at time t = 0, at what time will the light first flash? (b) If the value of R is increased, will the time you found in part () increase or decrease? (c) The flashing of the lamp is very brief. Why? (d) Explain what happens after the lamp flashes for the first time.

\(\mathscr{E}=105 \mathrm{~V}\)

Equation transcription::

Text transcription:

V{0}

C=0.150 mu F, R=2.35 times 10^{6} Omega, V{0}=90.0{~V}

{E}=105{~V}

Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.

Becoming a subscriber
Or look for another answer

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back