Overview
Brightspace: Username: dgamez6 - Password: Chicago1816
Link (Homework Assignment: https://docs.google.com/document/d/1zNJ-k82xIlHFXZ...
Please make sure to fully explaination conceptual and numerical problems clearly in the order listed in the question below. Once you are done, submit it to Brightspace at the link below:
Li:nk (Brightspace Submission): https://brightspace.ccc.edu/d2l/lms/dropbox/user/f..
Conceptual Problems (Show Full Explanation):
1. Understanding Ohm’s Law:
Explain how changing resistance in a circuit affects the current if voltage remains constant.2. Effect of Temperature on Resistance:
Why does resistance increase with temperature in most metals but decrease in semiconductors?3. Series vs. Parallel Circuits:
Why are home electrical circuits wired in parallel rather than in series?4. Power Dissipation in Circuits:
Why do high-resistance appliances (such as electric heaters) produce more heat than low-resistance ones?5. High-Voltage Power Transmission:
Power lines transmit electricity at high voltages. How does this minimize energy loss, and why is the voltage reduced before entering homes?Numerical Problems:
6. Ohm’s Law Calculation:
A circuit has a 12V battery and a 4Ω resistor. Calculate the current flowing through the circuit.7. Resistors in Series:
Three resistors (5Ω, 10Ω, and 15Ω) are connected in series. Find the total resistance and the current if a 30V battery is used.8. Resistors in Parallel:
Two resistors, 6Ω and 3Ω, are connected in parallel. Find the total resistance and the current drawn from a 12V source.9. Power Dissipation in a Resistor:
A 100W light bulb operates at 220V. Find the resistance of the filament and the current flowing through it.10. Temperature Effect on Resistance:
A copper wire has a resistance of 5Ω at 20°C. If the temperature coefficient of resistance for copper is 0.0039/°C, find its resistance at 50°C.