(a) According to the question,, find the total resistance of the circuit.
V = 4 V
I = 0.4 A
Total resistance R’ =?
R’ = V / I
R’ = 0.4 / 4
R’ = 10 ohm
(b) To calculate the value of R
R1 = 20 ohm
R’ = 10 ohm
1 / R’= 1 / R + 1 / R1
1 / 10 = 1 / R + 1 / 20
1 / R = 1 / 10 – 1 / 20
1 / R = (2 – 1) / 20
1 / R = 1 / 20
R = 20 ohm
(c) To find the current passing through R
Given
R = 20 ohm
V = 4 V
I = V / R
I = 4 / 20
Hence,
I = 0.2 A
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(b) ![\left[\mathrm{Pd}(\mathrm{CN})_{4}\right]^{2-}](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-ffda616d3dbe7dc8925722e87005924e_l3.png "Rendered by QuickLaTeX.com")
(c) ![\left[\mathrm{PdCl}_{4}\right]^{2-}](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-90cc6a4f4d42dee46e06d6f8ed516b7a_l3.png "Rendered by QuickLaTeX.com")
(d) ![\left[\mathrm{NiCl}_{4}\right]^{2}](https://www.learnatnoon.com/s/wp-content/ql-cache/quicklatex.com-149ee5c95bd9cfcc4405704fba2e1bab_l3.png "Rendered by QuickLaTeX.com")
(d) all of these