Lab 6: RC Circuits
Theory
The time required to charge or discharge a capacitor through a resistor depends on the product of
resistance and capacitance, RC. Capacitance has the units of Coulomb/Volt, which is called a Farad. The
capacitance is the measure
Lab 11: Interference
Theory
The function for a sine wave can be written as y (x,t) = Asin (2/)*(x) - (2/)*(vt) = Asin (kx t)
(equation 3). You can find angular frequency, , with equation 4 = 2f = 2*(1/T). Because light is
composed of waves, it is possible
Lab 8: Geometric Optics
Theory
An object placed a distance d_obj in front of a lens of focal length f produces an image at a distance
d_image, the relation between d_obj, f and d_image is shown by the lens equation, 1/f = 1/d_obj +
1/d_image (equation 1).
Lab 10: Standing Waves
Theory
A wave moving at velocity v to the right can be described as a displacement of the string y (x, t) = p(x +
vt) (equation 1). A sine shaped wave moving to the right, is given by y (x,t) = Asin*(2/)*(x vt)
(equation 3). Another
Lab 9: e/m
Theory
When an electron is accelerated by a potential difference (voltage) V, the resulting change in potential
energy is converted to kinetic energy, *mv^2 = eV (equation 1). The electron mass is, m and the
magnitude of its charge is, e. An el
Lab 7: Magnetic Fields
Theory
The magnetic field B at the center of a circular coil of radius R, with N turns of wire, and a current I is
= * */2* , (equation 1) where 0 is the vacuum magnetic constant and is defined as 0
*
= 4 107 Teslam/Amp. The field