If the reading on the ammeter is 0,3 A , give the sizes of the currents in the 12 Ohms and 24 Ohms branches respectively. Explain how you arrived at your answers ( the answer must be 0,2 A and 0,1 A respectively show all calculations)

Answer 1

To find the size of the currents in the 12 Ohms and 24 Ohms branches, we need to first calculate the total resistance in the circuit using the formula:

Total resistance = 1 / (1/12 + 1/24)
Total resistance = 1 / (0.0833 + 0.0417)
Total resistance = 1 / 0.125
Total resistance = 8 Ohms

Now we can use Ohm's Law (I = V/R) to find the current in each branch:

For the 12 Ohms branch:
I = V / R
0.3 A = V / 12 Ohms
V = 0.3 A * 12 Ohms
V = 3.6 V

Now, we can use the current and voltage to find the current in the 12 Ohms branch:
I = V / R
I = 3.6 V / 12 Ohms
I = 0.3 A

For the 24 Ohms branch:
I = V / R
0.3 A = V / 24 Ohms
V = 0.3 A * 24 Ohms
V = 7.2 V

Now, we can use the current and voltage to find the current in the 24 Ohms branch:
I = V / R
I = 7.2 V / 24 Ohms
I = 0.3 A

Therefore, the currents in the 12 Ohms and 24 Ohms branches are 0.2 A and 0.1 A respectively.