Question

If four resistance of 2ohm each are connected in parallel , what is the effective resistance ....??

Answer 1

1/R=1/R1 +1/R2 +1/R3 + 1/R4................... .................................. 1/R=1/2+1/2+1/2+1/2.................... .............................................. 1/R=4/2=2 R=1/2=0.5ohm