Answer:
(a)
To find the equivalent resistance of the circuit, we require the value of total
potential difference applied across the circuit and total current flowing
through the circuit.
Shamit made a mistake by connecting the voltmeter across resistance because in this case voltmeter will
read only the potential across not the total
potential.
That is the reason, why Shamit could not get the convert
result. To get the exact value, Vishesh connected the voltmeter across AC. Now voltmeter
will read the total potential applied across and
both. (1)
(b) First circuit made by Shamit will indicate only the
value of because voltmeter will show the value
of potential applied across (1)
(c) Vishesh is helpful, logical, scientific and practical.
(1)
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