30. the following diagram shows the experimen power a circuit with two resistors: ri, 20 h wire between ri and r2 experimental set up in a r 1.20 ohm, and r2.30 pin a high school physics chool physics lab. a 120 volt battery is used to meter, al, is used to read the current of the r1 200 120 v am1 r2 300 part a: explain how the battery's electric potential difference affects the current in the circuit

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?