Series and Parallel

Does this diagram represent a series or parallel circuit?

The picture shows an electrical circuit. This circuit is a series circuit because:

If the current at P1 is 3.0 A, what is the current at P3?

If each of the light bulbs has a potential difference of 2.0 V, what is the emf of the battery?

What is the total resistance of the circuit?

In a parallel circuit, which of the following is the same value throughout the circuit?

Which of the following is true of the circuit when switch S is open?

Two identical lamps, L1 & L2, are connected to a constant voltage power supply. The potential difference across L1 is 36 V.

What is the electromotive force (e.m.f.) of the power supply?

The total resistance of this circuit is __________.

The current going through the 45 Ω resistor is __________.  (Hint: Use R = V/I as the starting formula)

What is the current measured by ammeter A?

The total current going through the battery of this circuit is __________. (This qns requires multiple steps!)