I is correct ii is correct
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1) Consider the circuits below and calculate:
The total resistance in the circuit
The current in the circuit
The voltage drop across each resistor
A)
RT = 20 + 19 + 20 = 59
VT = RT * IT
10 = 59 * IT > IT = 0.17A
V1 = R1 * I1 > V1 = 20 * 0.17 = 3.4V
V2 = 19 * 0.17 = 3.23V
V3 = 20 * 0.17 = 3.4V
B)
RT = 12 + 5 + 10 = 27
VT = RT * IT
3 = 27 * IT > IT = 0.11A
V1 = R1 * I1 > V1 = 12 * 0.11 = 1.32V
V2 = 5 * 0.11 = 0.55V
V3 = 10 * 0.11 = 1.1V
2) Consider the diagram below and determine:
the total equivalent resistance
the voltage drops across R1, R2, and R3
the resistance in R2
VT = RT * IT
15 = RT * 0.05 > RT = 300
V1 = R1 * I1 > V1 = 5 * 0.05 = 0.25V
V3 = 15 * 0.05 = 0.75V
VT = 0.25 + V2 + 0.75 > 15 = 1 + V2 > V2 = 14V
RT = 5 + R2 + 15 > 300 = 20 +R2 > R2 = 280
3) What is the difference between the independent variable and dependent variable in an investigation?
The independent variable is the one you choose to vary.
The dependent variable is the one you keep track of as the independent keeps being changed.
4) How many trials, at least, must be run for each variation in an investigation?
Three.
5) How many variations, at least, must be run in an investigation?
Five.
6) List the subtopics of a lab report in the correct sequence.
Title/Purpose/Background Information/Materials/Methods/Data
Collection/Analysis/Conclusion.