Question

In the circuit shown in (Figure 1) , E = 31.0 V ,R1 = 4.00 Ω, R2 = 6.00 Ω and R3 = 3.00 Ω .

Part A

What is the potential difference Vab between points a and b when the switch S is open?

Express your answer with the appropriate units.

Part B

What is the potential difference Vab between points a and b when the switch Sis closed?

Express your answer with the appropriate units.

Part C

For the 4.00 Ω resistor, calculate the current through the resistor with S open.

Express your answer with the appropriate units.

Part D

For the 4.00 Ω resistor, calculate the current through the resistor with S closed.

Express your answer with the appropriate units.