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Category: Science and Technology
Date Submitted: 12/09/2013 03:22 PM
ECT 122 Week 2 iLab #1
Ohms Law
1. State Ohm’s Law. The current through a conductor between two points is directly proportional to the potential difference (i.e. voltage drop or voltage) across the two points, and inversely proportional to the resistance between them.
V=I x R
2. What are the three versions of Ohm’s Law equation?
Current: is voltage didvided by resistance
Voltage: is current times resistance
Resistance: is voltage divided by current
3. Using the equations for Ohm’s Law as a reference, complete the following:
The current through a fixed resistor ____fall____ when the applied voltage increases.
If the voltage is held constant, the current in a circuit ___double______ when the resistance increases.
If the resistance is held constant, the voltage in a circuit ____half_____ when the current decreases.
4. If the voltage and resistance in a circuit both double, what happens to the current? Use Ohm’s Law to explain your answer. If the resistance and voltage is double the current remain unchanged.
5. Given the circuits below, calculate the expected Ammeter reading.
Ammeter1: ____5A_____ Ammeter2: ___0.453m______
Ammeter3: _______3.830m__ Ammeter4: ____0.024m_____
6. Use Multisim to open the “Current” file located in Doc Sharing, Week 2. Run the simulation and record the results.
Ammeter1: _____5A____ Ammeter2: ____0.453m_____
Ammeter3: ___3.830m______ Ammeter4: _____0.024m____
Were the simulated values in agreement with the calculated results (YES/NO)? If not, determine the difference and explain why. yes
7. Use Multisim to open the “Voltage” file located in Doc Sharing, Week 2. Run the simulation. Use the current value from the ammeter and the resistance to determine the voltage value. Once you have calculated the supply voltage, click on the battery symbol and compare your answers.
Source Calculated Simulated
V1 __________ _____0.055m_____
V2 __________...