a uniform wire of resistance 18 ohm is cut into 3 pieces in the ratio of 1:2:3. these pieces are connected to form a triangle. A cell having a 12 V PD at its ends is connected across the resistor having highest resistance. calculate current through eac
The resistance of one piece is 1/6 x 18 = 3 ohms, others are 6 ohms and 9 ohms.
They form a triangle with 12V connected across 9 ohms.
Now the resistance of 3 and 6 ohms are in series and this is in parallel with the 9 ohm resistor.
So total resistance is 9/2 ohms.
Current = V/i = 12/(9/2) = 8/3 A
So a current of 8/3 A will flow through each resistance.