Guided Inquiry Questions 1) In order to magnetize the loop, we need to set up ou
ID: 2304354 • Letter: G
Question
Guided Inquiry Questions 1) In order to magnetize the loop, we need to set up our circuit according to Loop What does each element in the circuit diagram correspond to in the lab? Should the circuit diagram be included in your lab report? 2) How should the coil be aligned so that the compass aligns with 0 when the coil is not energized? 3) The current through the ammeter should not exceed 1.8 A. Why is this the maximum current that should be used? 4) There is another current loop in the circuit. What is this other loop? Does it affect the magnetic field in the main loop? How can it be taken into account? Is it a random or systematic effect? 5) What is the deflection at the center of the loop when the circuit is energized? 6) Why should the voltage on the power supply remain constant during your measurements? 7) If the direction of the current is reversed, what happens to the deflection of the compass'? 8) How can this be used to improve the estimation of the deflection angle? What is the uncertainty in this estimation? 9) How does the deflection change as the center of the compass is placed at different distances from the center of the loop? 10) What does a graph of tan 0 verses x look like? How can this be converted into a graph of Bcoi verses x? 11) Theory predicts that the field strength should drop as l/x2. Does your graph support this? 12) In order to investigate how the field strength scales with the number of loops, where is the best place to put the compass? 13) What does a graph of Bcoil verses Nlook like? 14) Theory predicts that the field strength should be proportional to N. Does your graph support this?Explanation / Answer
Q.1. The components of the circuit diagram:
V : represent the voltage source
R: Represent resistance
A: Ammetar to measure current flowing through the circuit.
Q.2. The coil should be alligned in such a way that the axis of the coil become parallel to the imaginary line connecting North and South Pole of Earth. Then the compass will show zero deflection.
Q.3. There is a limit is maximum current (1.8 A), because if the current exceed the maximum limit then the resistance may burn because of excessive heating. AND THE CIRCUIT WILL GET DAMAGED.
Q.4. The other loop is the big current loop containing the voltage source (V), Ammetar (A) , the resistance (R) and the mail loop( with many number of turns).
Note: the big loop has only one turn.
Yes it will effect the magnetic field of the mail loop.
The effect can be realized from the interaction between the magnetic field created by the two loop.
It is a symmetric effect.
Q.5. the center of the loop will deflect away from the opposite arm of the big loop.
Q.6. The voltage should remain costant during measurements, because steady voltage will produce a steady magnetic field in the main loop and which in turn will produce a steady deflection in the compass and the measurement will be easy.
Q.7. If the direction of the current is reversed, then the deflection of the compass will be is opposite direction but the angle of deflection will be same.
Q.8. This can be used to improve the estimation of the deflection angle. Because we can get two data of deflection( for the two direction of current) and can take the average of the modules of the two data.
Q.9. Angle of deflection will reduce as we put the compass away from the center of the loop.
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