OHM'SLAW AND COMBINATION OF RESISTANCES
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Current Electricity

268357 The colour coded resistance of corbon resistance is (I nitial three bands are red and fourth band is silver)

1 \(222 \Omega \pm 10 \%\)
2 \(2200 \Omega \pm 10 \%\)
3 \(333 \Omega \pm 5 \%\)
4 \(33000 \Omega \pm 10 \%\)
Current Electricity

268358 The resistance of a wire is 10 ohm. The resistance of a wire whose length is twice and the radiusis half, if it is made of same material is

1 \(20 \Omega\)
2 \(5 \Omega\)
3 \(80 \Omega\)
4 \(40 \Omega\)
Current Electricity

268359 The resultant resistance of two resistors when connected in series is \(48 \mathrm{ohm}\). The ratio of their resistances is \(3: 1\). The value of each resistance is

1 \(20 \Omega, 28 \Omega\)
2 \(32 \Omega, 16 \Omega\)
3 \(36 \Omega, 12 \Omega\)
4 \(24_{\Omega}, 24_{\Omega}\)
Current Electricity

268360 The resistance of a bulb filament is \(100 \Omega\) at a temperature of \(100^{\circ} \mathrm{C}\). If its temperature coefficient of resistance be 0.005 per \({ }^{0} \mathrm{C}\), its resistance will become \(200 \Omega\) at temperature of

1 \(300^{\circ} \mathrm{C}\)
2 \(400^{\circ} \mathrm{C}\)
3 \(500^{\circ} \mathrm{C}\)
4 \(200^{\circ} \mathrm{C}\)
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Current Electricity

268357 The colour coded resistance of corbon resistance is (I nitial three bands are red and fourth band is silver)

1 \(222 \Omega \pm 10 \%\)
2 \(2200 \Omega \pm 10 \%\)
3 \(333 \Omega \pm 5 \%\)
4 \(33000 \Omega \pm 10 \%\)
Current Electricity

268358 The resistance of a wire is 10 ohm. The resistance of a wire whose length is twice and the radiusis half, if it is made of same material is

1 \(20 \Omega\)
2 \(5 \Omega\)
3 \(80 \Omega\)
4 \(40 \Omega\)
Current Electricity

268359 The resultant resistance of two resistors when connected in series is \(48 \mathrm{ohm}\). The ratio of their resistances is \(3: 1\). The value of each resistance is

1 \(20 \Omega, 28 \Omega\)
2 \(32 \Omega, 16 \Omega\)
3 \(36 \Omega, 12 \Omega\)
4 \(24_{\Omega}, 24_{\Omega}\)
Current Electricity

268360 The resistance of a bulb filament is \(100 \Omega\) at a temperature of \(100^{\circ} \mathrm{C}\). If its temperature coefficient of resistance be 0.005 per \({ }^{0} \mathrm{C}\), its resistance will become \(200 \Omega\) at temperature of

1 \(300^{\circ} \mathrm{C}\)
2 \(400^{\circ} \mathrm{C}\)
3 \(500^{\circ} \mathrm{C}\)
4 \(200^{\circ} \mathrm{C}\)
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Current Electricity

268357 The colour coded resistance of corbon resistance is (I nitial three bands are red and fourth band is silver)

1 \(222 \Omega \pm 10 \%\)
2 \(2200 \Omega \pm 10 \%\)
3 \(333 \Omega \pm 5 \%\)
4 \(33000 \Omega \pm 10 \%\)
Current Electricity

268358 The resistance of a wire is 10 ohm. The resistance of a wire whose length is twice and the radiusis half, if it is made of same material is

1 \(20 \Omega\)
2 \(5 \Omega\)
3 \(80 \Omega\)
4 \(40 \Omega\)
Current Electricity

268359 The resultant resistance of two resistors when connected in series is \(48 \mathrm{ohm}\). The ratio of their resistances is \(3: 1\). The value of each resistance is

1 \(20 \Omega, 28 \Omega\)
2 \(32 \Omega, 16 \Omega\)
3 \(36 \Omega, 12 \Omega\)
4 \(24_{\Omega}, 24_{\Omega}\)
Current Electricity

268360 The resistance of a bulb filament is \(100 \Omega\) at a temperature of \(100^{\circ} \mathrm{C}\). If its temperature coefficient of resistance be 0.005 per \({ }^{0} \mathrm{C}\), its resistance will become \(200 \Omega\) at temperature of

1 \(300^{\circ} \mathrm{C}\)
2 \(400^{\circ} \mathrm{C}\)
3 \(500^{\circ} \mathrm{C}\)
4 \(200^{\circ} \mathrm{C}\)
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Current Electricity

268357 The colour coded resistance of corbon resistance is (I nitial three bands are red and fourth band is silver)

1 \(222 \Omega \pm 10 \%\)
2 \(2200 \Omega \pm 10 \%\)
3 \(333 \Omega \pm 5 \%\)
4 \(33000 \Omega \pm 10 \%\)
Current Electricity

268358 The resistance of a wire is 10 ohm. The resistance of a wire whose length is twice and the radiusis half, if it is made of same material is

1 \(20 \Omega\)
2 \(5 \Omega\)
3 \(80 \Omega\)
4 \(40 \Omega\)
Current Electricity

268359 The resultant resistance of two resistors when connected in series is \(48 \mathrm{ohm}\). The ratio of their resistances is \(3: 1\). The value of each resistance is

1 \(20 \Omega, 28 \Omega\)
2 \(32 \Omega, 16 \Omega\)
3 \(36 \Omega, 12 \Omega\)
4 \(24_{\Omega}, 24_{\Omega}\)
Current Electricity

268360 The resistance of a bulb filament is \(100 \Omega\) at a temperature of \(100^{\circ} \mathrm{C}\). If its temperature coefficient of resistance be 0.005 per \({ }^{0} \mathrm{C}\), its resistance will become \(200 \Omega\) at temperature of

1 \(300^{\circ} \mathrm{C}\)
2 \(400^{\circ} \mathrm{C}\)
3 \(500^{\circ} \mathrm{C}\)
4 \(200^{\circ} \mathrm{C}\)
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