Question

Here is a bit of a transition HW from classical physics to modern physics. You may have had a chemistry class where you looked at atomic spectra. A topic in modern physics that we will not talk about is that atoms and molecules have discrete energy levels since this is covered in chemistry, but the physics behind these energy levels involves the concept of quantization – about which we will talk next week. A high-voltage discharge tube is often used to study atomic spectra. The tubes require a large voltage across the terminals to operate – yes, this is the same idea as the acceleration of electrons that we discussed in HIP2 and 5. To get 5000V (rms) to the tube in order to dissipate 75.0W from our 120V (rms) socket, you need a step-up transformer.

a) What is the ratio of the number of turns in the secondary to the number of turns in the primary coil?
b) What is the rms current in each of the coils?
c) What is the effective resistance that the 120-V source is subjected to?

Answer 1

hive'n data seconday voltage V525000 v a. Hobe 5 5 노-5000 Np l2o RO Hese the hs cament in the prima'y is

(a0 the ns uent n the seconday 15 5000V Is = 0.015A The effechve xesstance be R (Ro) 15 R440o 15