I need help with these test questions!

Question 13 [9 points] V" Saved E-Il {a} Lahel the parts of the DC motor. {5 marks} [b] Explain the Motor Principle in relation to the operation of the DC motor. {2 marks] [c] Explain the role of the commutator in the DC motor. {2 marks] Question 19 [If points] =:: Use the circuit below to answer the following questions. Ill 1'1." HIV {a} What is the potential difference across R1? {hi If it] A flows out of the battery, what is the current through R1? {c} What is the resistance of R1? {cl} What is the resistance of the I" V Ioacl? Add a File Record Audio Record '1."on Question 20 [9 poin ts] 5- A parallel circuit has three 2 Vlt cells {the cells are in series], and two resistors. What is the voltage across each of the resistors? If the first resistor is 4 ohms and the second resistor is 2 ohms. What is the total resistance in system? HOW many amps is each resistor? What is the total amperage of the system? Add a File Record Audio Record 1qi'ldalo