Answer:
(a)
Monika reminded the low resistivity property of copper. The reason behind her
approach may be the saving of electricity. But as a heater coil, copper will not
work, because due to its less resistance, amount of heat generated in it will
be lesser. (1)
(b) After suggestion of Monika, the circuit was
completed successfully, so it may be nichrome as suggested
by Monika because nichrome has high resistivity, so more heat will be generated
in it. (1)
(c) Qualities of Monika to be appreciated are (i) Scientific
temperament
(ii) Convincing power
(iii) Awareness (1)
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