OHM'SLAW AND COMBINATION OF RESISTANCES
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Current Electricity

268370 You are given several identical resistors each of value \(10 \Omega\) and each capable of carrying a maximum current of 1A. It is required to make a suitable combination of these to resistances to produce a resistance of \(5 \Omega\) which can carry a current of \(4 A\). The minimum number of resistors required for this job is

1 4
2 8
3 10
4 20
Current Electricity

268371 A wire of resistance \(50 \Omega\) is cut into six equal parts and they ae bundled together side by side to form a thicker wire. The resistance of the bundle is

1 \(\frac{18}{25} \Omega\)
2 \(\frac{9}{12.5} \Omega\)
3 \(\frac{25}{9} \Omega\)
4 \(\frac{25}{18} \Omega\)
Current Electricity

268372 Three conductors of resistance \(12 \Omega\) each are connected to form an equilateral triangle. The resistance between any two vertices is

1 \(4 \Omega\)
2 \(2 \Omega\)
3 \(6 \Omega\)
4 \(8 \Omega\)
Current Electricity

268373 When three equal resistance are connected in parallel, the effective resistance is \(1 / 3 \Omega\). If all are connected in series, the effective resistance is

1 \(9 \Omega\)
2 \(3 \Omega\)
3 \(6 \Omega\)
4 \(12 \Omega\)
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Current Electricity

268370 You are given several identical resistors each of value \(10 \Omega\) and each capable of carrying a maximum current of 1A. It is required to make a suitable combination of these to resistances to produce a resistance of \(5 \Omega\) which can carry a current of \(4 A\). The minimum number of resistors required for this job is

1 4
2 8
3 10
4 20
Current Electricity

268371 A wire of resistance \(50 \Omega\) is cut into six equal parts and they ae bundled together side by side to form a thicker wire. The resistance of the bundle is

1 \(\frac{18}{25} \Omega\)
2 \(\frac{9}{12.5} \Omega\)
3 \(\frac{25}{9} \Omega\)
4 \(\frac{25}{18} \Omega\)
Current Electricity

268372 Three conductors of resistance \(12 \Omega\) each are connected to form an equilateral triangle. The resistance between any two vertices is

1 \(4 \Omega\)
2 \(2 \Omega\)
3 \(6 \Omega\)
4 \(8 \Omega\)
Current Electricity

268373 When three equal resistance are connected in parallel, the effective resistance is \(1 / 3 \Omega\). If all are connected in series, the effective resistance is

1 \(9 \Omega\)
2 \(3 \Omega\)
3 \(6 \Omega\)
4 \(12 \Omega\)
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Current Electricity

268370 You are given several identical resistors each of value \(10 \Omega\) and each capable of carrying a maximum current of 1A. It is required to make a suitable combination of these to resistances to produce a resistance of \(5 \Omega\) which can carry a current of \(4 A\). The minimum number of resistors required for this job is

1 4
2 8
3 10
4 20
Current Electricity

268371 A wire of resistance \(50 \Omega\) is cut into six equal parts and they ae bundled together side by side to form a thicker wire. The resistance of the bundle is

1 \(\frac{18}{25} \Omega\)
2 \(\frac{9}{12.5} \Omega\)
3 \(\frac{25}{9} \Omega\)
4 \(\frac{25}{18} \Omega\)
Current Electricity

268372 Three conductors of resistance \(12 \Omega\) each are connected to form an equilateral triangle. The resistance between any two vertices is

1 \(4 \Omega\)
2 \(2 \Omega\)
3 \(6 \Omega\)
4 \(8 \Omega\)
Current Electricity

268373 When three equal resistance are connected in parallel, the effective resistance is \(1 / 3 \Omega\). If all are connected in series, the effective resistance is

1 \(9 \Omega\)
2 \(3 \Omega\)
3 \(6 \Omega\)
4 \(12 \Omega\)
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Current Electricity

268370 You are given several identical resistors each of value \(10 \Omega\) and each capable of carrying a maximum current of 1A. It is required to make a suitable combination of these to resistances to produce a resistance of \(5 \Omega\) which can carry a current of \(4 A\). The minimum number of resistors required for this job is

1 4
2 8
3 10
4 20
Current Electricity

268371 A wire of resistance \(50 \Omega\) is cut into six equal parts and they ae bundled together side by side to form a thicker wire. The resistance of the bundle is

1 \(\frac{18}{25} \Omega\)
2 \(\frac{9}{12.5} \Omega\)
3 \(\frac{25}{9} \Omega\)
4 \(\frac{25}{18} \Omega\)
Current Electricity

268372 Three conductors of resistance \(12 \Omega\) each are connected to form an equilateral triangle. The resistance between any two vertices is

1 \(4 \Omega\)
2 \(2 \Omega\)
3 \(6 \Omega\)
4 \(8 \Omega\)
Current Electricity

268373 When three equal resistance are connected in parallel, the effective resistance is \(1 / 3 \Omega\). If all are connected in series, the effective resistance is

1 \(9 \Omega\)
2 \(3 \Omega\)
3 \(6 \Omega\)
4 \(12 \Omega\)