Answer:
Since both the wires are made of the same material and have equal
lengths and equal diameters, these have the same resistance. Let it be R.
When
connected in series, their equivalent resistance is given by
Rs = R + R = 2R
When
connected in parallel, their equivalent resistance is given by
or Rp =
Further,
electrical power is given by P =
Power
(or heat produced) in series, Ps =
Power
(or heat produced) in parallel, Pp =
Thus,
or Ps
: Pp : : 1 : 4
Thus,
(c) is the correct answer.
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