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magnetic field experiment, physics 4B 1. Before the start of each trial, the magnetic field sensor...

magnetic field experiment, physics 4B

1. Before the start of each trial, the magnetic field sensor was zeroed. However, a zero error was still noticeable in each graph. What external source could create this large, everpresent systematic error? Why? 2. Identify the independent variable(s) in this experiment. 3. Identify the fixed variable(s) in this experiment. 4. Identify the dependent variable(s) in this experiment.

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Answer #1

1. In magnetic field experiment we have noticed a zero error in the curve. Factors on which zero error depends are...

a. Horizontal component of Earth's magnetic field,H=ICos(theta) ,where I is the Earth's magnetic field.

b. Residual magnetic field of the magnetic material. It is the internal property of magnetic material.

2. If we consider a long solenoid then

Magnetic field inside the solenoid B= Permeability of air×No of turns per unit length of solenoid×current through the solenoid....In this experiment current is the independent variable that does not depend on any other variables and it is the cause of magnetic(produced) field within the solenoid.

3. Fixed variables are..

a. Permeability of air

b. No of turns per unit lenth of solenoid

These are constant for a given set up.

4. Dependent variables are..

a. Magnetic field intensity(H) as H=n×I where n=no of turns per unit length and I=Current

b. Magnetic field B

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