V pp voltsdiv x div volts d What is the setting on the SecDiv control knob

# V pp voltsdiv x div volts d what is the setting on

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V pp = _______ volts/div x _______ div = _______ volts d. What is the setting on the Sec/Div control knob? __________ seconds/div e. How many horizontal divisions from positive going crossing to positive going crossing? _______ div f. What is the period of the signal (T)? T = _______ seconds/div x _______ div = __________ seconds g. What is the frequency of the signal (f)? __________ hertz Examiner:_____________________________ Date:______________________ II. Display a signal of the tuning fork that is produced by the microphone on Channel 2 and calculate its frequency. a. Period of the signal (T) T = ___________ seconds/div x __________ div = ___________ seconds b. Frequency of the signal (f)______________ hertz Examiner:_____________________________ Date:______________________ Please turn in this page only when finished. PHYSICS 210L PHYSICS 210L Electromagnetic Induction Introduction and Theory In your own words, discuss the purpose of this experiment. Don’t forget to discuss the meaning of the relevant concepts (Magnetic flux, Faradays Law, and Lenz’s Law). Materials Twp 3400-turn big coil Galvanometer A 1.5V battery Cables with banana-to-banana plugs BNC cables PASCO 200-turn large loop coil, 400-turn and 2000-turn small loop coil Function Generator Oscilloscope A small compass Procedure Part 1 1. Connect a 3400-turn big coil (62.5 ) to a 1.5 V battery (leave one of the terminals unconnected for now). Place a small compass inside the coil (on axis if possible) with its needle pointing perpendicular to the coil axis. Now temporarily complete the circuit by touching the unconnected terminal to the battery. What happens to the compass? Why? See if you can deduce the direction of the polarity of the compass needle. 2. Connect one big coil to a Galvanometer and the other big coil to 1.5v battery (leave one of the terminals unconnected for now). Make sure the faces of the coils are parallel to each other (within 1 cm). Experiment 12 PHYSICS 210L Now temporarily complete the circuit by touching the unconnected terminal to the battery. What happens to the galvanometer? Does it deflect? Which way and why? Give an example where this effect will occur. Part 2 A small coil of 400-turns will be connected to a signal generator (called the field coil). An oscilloscope will monitor the voltage applied to the coil. Since the current through the coil varies with time, the field produced by the coil will vary with time. A 2000-turn coil called the detector coil will be also connected to an oscilloscope. The detector coil signal will be monitored simultaneously with the voltage applied to the field coil. Follow the procedure below. 1. Square wave input signal. Connect the 400-turn small loop to the signal generator. Turn on the generator and the oscilloscope. Set the signal generator to produce a 1V square wave (peak-to-peak) at 100Hz with the aid of the oscilloscope. Make sure that the signal is observed on channel 1 of the oscilloscope. If the vertical setting is set to 0.5V/division, the overall height (peak-to-peak) of the observed signal will be 2.0 cm.  • • • 