Combination of Resistors
PHXII03:CURRENT ELECTRICITY

356954 A wire of resistance \(18\,ohm\) is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in \(ohm\))

1 12
2 6
3 4
4 9
PHXII03:CURRENT ELECTRICITY

356955 Four resistances of \(10\, \Omega, 60\, \Omega, 100\, \Omega\) and \(200\, \Omega\) respectively taken in order are used to form a Wheatstone's bridge. \(A\) \(15\;V\) battery is connected to the ends of a \(200\, \Omega\) resistance, the current through it will be

1 \(7.5 \times {10^{ - 5}}\;A\)
2 \(7.5 \times {10^{ - 4}}\;A\)
3 \(7.5 \times {10^{ - 3}}\;A\)
4 \(7.5 \times {10^{ - 2}}\;A\)
PHXII03:CURRENT ELECTRICITY

356956 Seven resistances are connected between points \(A\) and \(B\) as shown in figure. The equivalent resistance between \(A\) and \(B\) is
supporting img

1 \(5\, \Omega\)
2 \(4.5\, \Omega\)
3 \(4\, \Omega\)
4 \(3\, \Omega\)
PHXII03:CURRENT ELECTRICITY

356957 Equivalent resistance between the adjacent corners of a regular \(n\)-side polygon of uniform wire of resistance \(R\) would be

1 \(\frac{{(n - 1)R}}{n}\)
2 \(\frac{{{n^2}R}}{{n - 1}}\)
3 \(\frac{{(n - 1)R}}{{(2n - 1)}}\)
4 \(\frac{{(n - 1)R}}{{{n^2}}}\)
PHXII03:CURRENT ELECTRICITY

356954 A wire of resistance \(18\,ohm\) is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in \(ohm\))

1 12
2 6
3 4
4 9
PHXII03:CURRENT ELECTRICITY

356955 Four resistances of \(10\, \Omega, 60\, \Omega, 100\, \Omega\) and \(200\, \Omega\) respectively taken in order are used to form a Wheatstone's bridge. \(A\) \(15\;V\) battery is connected to the ends of a \(200\, \Omega\) resistance, the current through it will be

1 \(7.5 \times {10^{ - 5}}\;A\)
2 \(7.5 \times {10^{ - 4}}\;A\)
3 \(7.5 \times {10^{ - 3}}\;A\)
4 \(7.5 \times {10^{ - 2}}\;A\)
PHXII03:CURRENT ELECTRICITY

356956 Seven resistances are connected between points \(A\) and \(B\) as shown in figure. The equivalent resistance between \(A\) and \(B\) is
supporting img

1 \(5\, \Omega\)
2 \(4.5\, \Omega\)
3 \(4\, \Omega\)
4 \(3\, \Omega\)
PHXII03:CURRENT ELECTRICITY

356957 Equivalent resistance between the adjacent corners of a regular \(n\)-side polygon of uniform wire of resistance \(R\) would be

1 \(\frac{{(n - 1)R}}{n}\)
2 \(\frac{{{n^2}R}}{{n - 1}}\)
3 \(\frac{{(n - 1)R}}{{(2n - 1)}}\)
4 \(\frac{{(n - 1)R}}{{{n^2}}}\)
PHXII03:CURRENT ELECTRICITY

356954 A wire of resistance \(18\,ohm\) is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in \(ohm\))

1 12
2 6
3 4
4 9
PHXII03:CURRENT ELECTRICITY

356955 Four resistances of \(10\, \Omega, 60\, \Omega, 100\, \Omega\) and \(200\, \Omega\) respectively taken in order are used to form a Wheatstone's bridge. \(A\) \(15\;V\) battery is connected to the ends of a \(200\, \Omega\) resistance, the current through it will be

1 \(7.5 \times {10^{ - 5}}\;A\)
2 \(7.5 \times {10^{ - 4}}\;A\)
3 \(7.5 \times {10^{ - 3}}\;A\)
4 \(7.5 \times {10^{ - 2}}\;A\)
PHXII03:CURRENT ELECTRICITY

356956 Seven resistances are connected between points \(A\) and \(B\) as shown in figure. The equivalent resistance between \(A\) and \(B\) is
supporting img

1 \(5\, \Omega\)
2 \(4.5\, \Omega\)
3 \(4\, \Omega\)
4 \(3\, \Omega\)
PHXII03:CURRENT ELECTRICITY

356957 Equivalent resistance between the adjacent corners of a regular \(n\)-side polygon of uniform wire of resistance \(R\) would be

1 \(\frac{{(n - 1)R}}{n}\)
2 \(\frac{{{n^2}R}}{{n - 1}}\)
3 \(\frac{{(n - 1)R}}{{(2n - 1)}}\)
4 \(\frac{{(n - 1)R}}{{{n^2}}}\)
PHXII03:CURRENT ELECTRICITY

356954 A wire of resistance \(18\,ohm\) is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in \(ohm\))

1 12
2 6
3 4
4 9
PHXII03:CURRENT ELECTRICITY

356955 Four resistances of \(10\, \Omega, 60\, \Omega, 100\, \Omega\) and \(200\, \Omega\) respectively taken in order are used to form a Wheatstone's bridge. \(A\) \(15\;V\) battery is connected to the ends of a \(200\, \Omega\) resistance, the current through it will be

1 \(7.5 \times {10^{ - 5}}\;A\)
2 \(7.5 \times {10^{ - 4}}\;A\)
3 \(7.5 \times {10^{ - 3}}\;A\)
4 \(7.5 \times {10^{ - 2}}\;A\)
PHXII03:CURRENT ELECTRICITY

356956 Seven resistances are connected between points \(A\) and \(B\) as shown in figure. The equivalent resistance between \(A\) and \(B\) is
supporting img

1 \(5\, \Omega\)
2 \(4.5\, \Omega\)
3 \(4\, \Omega\)
4 \(3\, \Omega\)
PHXII03:CURRENT ELECTRICITY

356957 Equivalent resistance between the adjacent corners of a regular \(n\)-side polygon of uniform wire of resistance \(R\) would be

1 \(\frac{{(n - 1)R}}{n}\)
2 \(\frac{{{n^2}R}}{{n - 1}}\)
3 \(\frac{{(n - 1)R}}{{(2n - 1)}}\)
4 \(\frac{{(n - 1)R}}{{{n^2}}}\)