FIND EQUIVALENT RESISTANCE ALONG "A" AND "B" IN THE FOLLOWING CIRCUIT?AND ALSO DISTRIBUTE "+" AND "-" SIGNS ALONG EACH RESISTORS IN THE FOLLOWING CIRCUIT DIAGRAM?WIRE "YC" AND "XD" ARE CONNECTED with "F" as center.

Asked by abinash.gupta003 | 28th Jun, 2017, 02:25: PM

Expert Answer:

1) In the above diagram, F is where the connection between YC and XD is made.
 
2) So, effectively there is a "SHORT" between AYFXB.
 
3) From basic electronics, current chooses a path that offers the least resistance. When there is a short in a circuit, it offers the least resistance (≈0 Ω)
 
4) So, the effective resistance of the circuit can be considered as zero.
 
5) Consider the following basic circuit:
6) Here, there is a current developed from the voltage source. It flows from the positive terminal. At point E it sees two paths one towards F and one towards B. But, the current flows from E to F as it has zero resistance. So, the path of the current is AEFD. This path is offering zero resistance.

Answered by Romal Bhansali | 28th Jun, 2017, 03:32: PM