Predicted Values of the Rms, Peak and Peak-To-Peak Voltage Across the Circuit and Each Resistor

ANALYSIS OF RESULT

EXPERIMENT 1: SERIES AC CIRCUIT

Table 1 Predicted values of the RMS, peak and peak-to-peak voltage across the circuit and each resistor.

From the circuit, the total voltage supply is 12V,

R1= 1.2kΩ, R2 = 2.2kΩ, R3 = 4.7kΩ, R4 = 10kΩ

By using the Ohms law, V = I*R,
Since I total = I1 = I2 = I3 = I4

Eg:  I total =     V total         =           _           12V                   = 0.663mA
                      R total                   (1.2+2.2+4.7+10)

        VR1 =     0.663mA × 1.2kΩ
              =     0.796V  
              =     0.80V

For peak voltage, Vmax =   × VR1
        = 1.13V

Peak-to-peak voltage is just the product of Vmax by two.[pic 1]

Table 2 Measured values of the RMS, peak and peak-to-peak voltage across the circuit and each resistor using DMM.

Table 3 Predicted value of current in the circuit.