1. A 10 ohm resistor is in "parallel" with a 15 ohm resistor. The equivalent resistance is

a. 6 ohms.

b. 0.17 ohms.

c. 5 ohms.

d. 25 ohms.

2. A 10 ohm resistor is in "series" with a 15 ohm resistor. The equivalent resistance is

a. 6 ohms

b. 5 ohms.

c. 25 ohms

3. At a junction in a circuit that has three wires, you measure 5 amps flowing into the junction in one wire and 2 amps flowing out of the junction from another wire. The current in the third wire is

a. 7 amps, flowing out of the junction.

b. 3 amps, flowing into the junction.

c. 7 amps, flowing into the junction.

d. 3 amps, flowing out of the junction.

4. A 6 V battery is in a simple series loop with two 3 ohm resistors. The current in the circuit is, in amps,