A wire of resistance R is cut into three equal parts and are bundled side by side.The resistance of bundle is?
Answers
Answered by
4
Answer:
The resistance of the bundle = Rp = R/9
Explanation:
A wire of resistance 'r' is cut into 3 equal parts.
Therefore, 3 equal resistance new wires are formed
Imagine them as resistors ( each resistor has resistance r/3 because each resistor has 1/3 the total resistance before the wire was cut)
They are connected in parallel
Therefore, Use resistors in parallel formula
1/Rp = 1/R1 + 1/R2+ 1/R3
1/Rp = 3/r + 3/r + 3/r
1/Rp = 9/r
Rp = r/9
NOTE : KINDLY REFER TO THE IMAGE BELOW .
Attachments:
Similar questions