OHM'SLAW AND COMBINATION OF RESISTANCES
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Current Electricity

268428 Twelve resistances each of resistance \(R\) are connected in the circuit as shown in fig. Net resistance between points \(A\) and \(C\) would be

1 \(\frac{5 R}{3}\)
2 \(\frac{7 R}{6}\)
3 \(R\)
4 \(\frac{3 R}{4}\)
Current Electricity

268429 A resistance is made by connecting two wires (series) of same material of radii \(2 \mathrm{~mm}\) and 5 \(\mathrm{mm}\) and length \(8 \mathrm{~cm}\) and \(5 \mathrm{~cm}\). A potential difference of \(22 \mathrm{~V}\) is applied to them. The potential difference on the longer wire is

1 \(15 \mathrm{~V}\)
2 \(18 \mathrm{~V}\)
3 \(16 \mathrm{~V}\)
4 \(20 \mathrm{~V}\)
Current Electricity

268430 A \(220 \mathrm{~V}\) and \(800 \mathrm{~W}\) electric kettle and three \(220 \mathrm{~V}\) and \(100 \mathrm{~W}\) bulbs are connected in parallel. O n connecting this combination with \(200 \mathrm{~V}\) supply, the total current in the circuit will be

1 \(0.15 \mathrm{~A}\)
2 \(5 \mathrm{~A}\)
3 \(5.5 \mathrm{~A}\)
4 \(4.55 \mathrm{~A}\)
Current Electricity

268431 What is the equivalent resistance of the circuit

1 \(6 \Omega\)
2 \(7 \Omega\)
3 \(8 \Omega\)
4 \(9 \Omega\)
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Current Electricity

268428 Twelve resistances each of resistance \(R\) are connected in the circuit as shown in fig. Net resistance between points \(A\) and \(C\) would be

1 \(\frac{5 R}{3}\)
2 \(\frac{7 R}{6}\)
3 \(R\)
4 \(\frac{3 R}{4}\)
Current Electricity

268429 A resistance is made by connecting two wires (series) of same material of radii \(2 \mathrm{~mm}\) and 5 \(\mathrm{mm}\) and length \(8 \mathrm{~cm}\) and \(5 \mathrm{~cm}\). A potential difference of \(22 \mathrm{~V}\) is applied to them. The potential difference on the longer wire is

1 \(15 \mathrm{~V}\)
2 \(18 \mathrm{~V}\)
3 \(16 \mathrm{~V}\)
4 \(20 \mathrm{~V}\)
Current Electricity

268430 A \(220 \mathrm{~V}\) and \(800 \mathrm{~W}\) electric kettle and three \(220 \mathrm{~V}\) and \(100 \mathrm{~W}\) bulbs are connected in parallel. O n connecting this combination with \(200 \mathrm{~V}\) supply, the total current in the circuit will be

1 \(0.15 \mathrm{~A}\)
2 \(5 \mathrm{~A}\)
3 \(5.5 \mathrm{~A}\)
4 \(4.55 \mathrm{~A}\)
Current Electricity

268431 What is the equivalent resistance of the circuit

1 \(6 \Omega\)
2 \(7 \Omega\)
3 \(8 \Omega\)
4 \(9 \Omega\)
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Current Electricity

268428 Twelve resistances each of resistance \(R\) are connected in the circuit as shown in fig. Net resistance between points \(A\) and \(C\) would be

1 \(\frac{5 R}{3}\)
2 \(\frac{7 R}{6}\)
3 \(R\)
4 \(\frac{3 R}{4}\)
Current Electricity

268429 A resistance is made by connecting two wires (series) of same material of radii \(2 \mathrm{~mm}\) and 5 \(\mathrm{mm}\) and length \(8 \mathrm{~cm}\) and \(5 \mathrm{~cm}\). A potential difference of \(22 \mathrm{~V}\) is applied to them. The potential difference on the longer wire is

1 \(15 \mathrm{~V}\)
2 \(18 \mathrm{~V}\)
3 \(16 \mathrm{~V}\)
4 \(20 \mathrm{~V}\)
Current Electricity

268430 A \(220 \mathrm{~V}\) and \(800 \mathrm{~W}\) electric kettle and three \(220 \mathrm{~V}\) and \(100 \mathrm{~W}\) bulbs are connected in parallel. O n connecting this combination with \(200 \mathrm{~V}\) supply, the total current in the circuit will be

1 \(0.15 \mathrm{~A}\)
2 \(5 \mathrm{~A}\)
3 \(5.5 \mathrm{~A}\)
4 \(4.55 \mathrm{~A}\)
Current Electricity

268431 What is the equivalent resistance of the circuit

1 \(6 \Omega\)
2 \(7 \Omega\)
3 \(8 \Omega\)
4 \(9 \Omega\)
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Current Electricity

268428 Twelve resistances each of resistance \(R\) are connected in the circuit as shown in fig. Net resistance between points \(A\) and \(C\) would be

1 \(\frac{5 R}{3}\)
2 \(\frac{7 R}{6}\)
3 \(R\)
4 \(\frac{3 R}{4}\)
Current Electricity

268429 A resistance is made by connecting two wires (series) of same material of radii \(2 \mathrm{~mm}\) and 5 \(\mathrm{mm}\) and length \(8 \mathrm{~cm}\) and \(5 \mathrm{~cm}\). A potential difference of \(22 \mathrm{~V}\) is applied to them. The potential difference on the longer wire is

1 \(15 \mathrm{~V}\)
2 \(18 \mathrm{~V}\)
3 \(16 \mathrm{~V}\)
4 \(20 \mathrm{~V}\)
Current Electricity

268430 A \(220 \mathrm{~V}\) and \(800 \mathrm{~W}\) electric kettle and three \(220 \mathrm{~V}\) and \(100 \mathrm{~W}\) bulbs are connected in parallel. O n connecting this combination with \(200 \mathrm{~V}\) supply, the total current in the circuit will be

1 \(0.15 \mathrm{~A}\)
2 \(5 \mathrm{~A}\)
3 \(5.5 \mathrm{~A}\)
4 \(4.55 \mathrm{~A}\)
Current Electricity

268431 What is the equivalent resistance of the circuit

1 \(6 \Omega\)
2 \(7 \Omega\)
3 \(8 \Omega\)
4 \(9 \Omega\)
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