Solve each problem. Be sure to show your work and give a final answer with units rounded to the given number of significant figures.

1) Find the voltage on a circuit with a resistance of 12.5 Ω if it has a current of 2.35 A.

2) If a circuit with a 9.0 V battery has a current of 6.2 A, how much resistance is in the circuit?

3) A circuit has three resistors with values of 4.0 Ω, 8.0 Ω, and 12 Ω. What is the equivalent resistance if they are wired in series?

4) A circuit has three resistors with values of 4.0 Ω, 8.0 Ω, and 12 Ω. What is the equivalent resistance if they are wired in parallel?

Question

Physics

Andreas Rios

12 February, 03:31

Solve each problem. Be sure to show your work and give a final answer with units rounded to the given number of significant figures.

1) Find the voltage on a circuit with a resistance of 12.5 Ω if it has a current of 2.35 A.

2) If a circuit with a 9.0 V battery has a current of 6.2 A, how much resistance is in the circuit?

3) A circuit has three resistors with values of 4.0 Ω, 8.0 Ω, and 12 Ω. What is the equivalent resistance if they are wired in series?

4) A circuit has three resistors with values of 4.0 Ω, 8.0 Ω, and 12 Ω. What is the equivalent resistance if they are wired in parallel?

+4

Answers (1)

Know the Answer?

Abbigail Rasmussen · Answer 1

1. the voltage will be 2.35*12.5 = 29.4V

2. the resistance would be 9.0/6.2 = 1.45ohms

3. in series they will add up thus 4+8+12 = 24ohms

4. in parallel it will be 2.18ohms