Radio waves prac (1 Viewer)

[henry08]

Just have a couple of questiosn about the prac where you rpoduce and receive radio waves using an induction coil and a small transistor radio.

I'm having trouble with the following two questions: I get part of them, but not all of them, so some help woudl be appreciated please

1. An induction coil is an example of a transformer. What can you infer about the voltage across the gap and the resulting charge movement observed as the spark?

2. In what form is the energy trandferred from the spark to the radio? In what manner must charges move to produce this energy?

 

[vds700]

Just have a couple of questiosn about the prac where you rpoduce and receive radio waves using an induction coil and a small transistor radio.

I'm having trouble with the following two questions: I get part of them, but not all of them, so some help woudl be appreciated please

1. An induction coil is an example of a transformer. What can you infer about the voltage across the gap and the resulting charge movement observed as the spark?

2. In what form is the energy trandferred from the spark to the radio? In what manner must charges move to produce this energy?

1. HIigh voltage across the gap. The spark is high energy, oscillating electrons, which cause the emission of radio waves.

2. Electromagnetic radiation. Charges (electrons) must oscillate to produce this radiation.

Hope this helps

 

[henry08]

Thanks vds700

 

[Arowana21]

also remember that the intensity of the spark is affected by the different wavelengths/frequencies of electromagnetic radiation, otherwise know as the photoelectric effect, this is what Herz observed in this experiment