ملتقى الفيزيائيين العرب - الله يوفقكم ويدخلكم الجنه الي يجاوب على اسـألتي؟؟

السلام عليكم .....انا أبي حل اسئلة الفيز لاني بصراحه محتاجه حلها وشكرا
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Ohm's law

Question 1:
Two resistors are connected in parallel and are connected across a 40 volt battery. If each resistor is 1 kilo ohms, what is the total battery current?
Question 2:
a- If ten resistors of equal value R are wired in parallel, what will the total resistance be?
b- How would you combine three 28 ohm resistors to get a total resistance of 42 ohm?
Question 3:

a- Looking at the circuit above, At which position should an ammeter beplaced to measure the current passing only through resistor R1 ?

b- Based on the circuit above, calculate the resistance of R?
c- The diagram below shows a circuit with three resistors connected to a 15 V source. What is the resistance of R2
Question 4:
a- What is the difference between the internal resistance of ammeters and voltmeters?
b- An electric motor draws 150 A of current of current while operating at 240 V. What is the power rating of this motor