01. Ohm's Law, Resistance, Conductivity and Thermal Dependency of Resistance
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Current Electricity

151921 The resistance of wire at $20^{\circ} \mathrm{C}$ is $20 \Omega$ and $500^{\circ} \mathrm{C}$ is $60 \Omega$. At which temperature its resistance will be $25 \Omega$

1 $50^{\circ} \mathrm{C}$
2 $60^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $80^{\circ} \mathrm{C}$
BITSAT-2017
Current Electricity

151922 The ratio of the resistance of conductor at temperature $15^{\circ} \mathrm{C}$ to its resistance at temperature $37.5^{\circ} \mathrm{C}$ is $4: 5$. The temperature coefficient of resistance the conductor is

1 $\frac{1}{25}{ }^{\circ} \mathrm{C}^{-1}$
2 $\frac{1}{50}{ }^{\circ} \mathrm{C}^{-1}$
3 $\frac{1}{80}^{\circ} \mathrm{C}^{-1}$
4 $\frac{1}{75}{ }^{\circ} \mathrm{C}^{-1}$
Manipal UGET-2017
Current Electricity

151923 The resistance of an ammeter is $13 \Omega$ and its scale is graduated for a current upto $100 \mathrm{~A}$. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750 \mathrm{~A}$ by this meter. The value of shunt resistance is

1 $20 \Omega$
2 $2 \Omega$
3 $0.2 \Omega$
4 $2 \mathrm{k} \Omega$
UPSEE - 2010
Current Electricity

151924 A small power station supplies electricity to 5000 lamps connected in parallel. Each lamp has a resistance of $220 \Omega$ and is operated at 220 $\mathrm{V}$. The total current supplied by the station is

1 $2500 \mathrm{~A}$
2 $3500 \mathrm{~A}$
3 $5000 \mathrm{~A}$
4 $10000 \mathrm{~A}$
UPSEE - 2009
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Current Electricity

151921 The resistance of wire at $20^{\circ} \mathrm{C}$ is $20 \Omega$ and $500^{\circ} \mathrm{C}$ is $60 \Omega$. At which temperature its resistance will be $25 \Omega$

1 $50^{\circ} \mathrm{C}$
2 $60^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $80^{\circ} \mathrm{C}$
BITSAT-2017
Current Electricity

151922 The ratio of the resistance of conductor at temperature $15^{\circ} \mathrm{C}$ to its resistance at temperature $37.5^{\circ} \mathrm{C}$ is $4: 5$. The temperature coefficient of resistance the conductor is

1 $\frac{1}{25}{ }^{\circ} \mathrm{C}^{-1}$
2 $\frac{1}{50}{ }^{\circ} \mathrm{C}^{-1}$
3 $\frac{1}{80}^{\circ} \mathrm{C}^{-1}$
4 $\frac{1}{75}{ }^{\circ} \mathrm{C}^{-1}$
Manipal UGET-2017
Current Electricity

151923 The resistance of an ammeter is $13 \Omega$ and its scale is graduated for a current upto $100 \mathrm{~A}$. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750 \mathrm{~A}$ by this meter. The value of shunt resistance is

1 $20 \Omega$
2 $2 \Omega$
3 $0.2 \Omega$
4 $2 \mathrm{k} \Omega$
UPSEE - 2010
Current Electricity

151924 A small power station supplies electricity to 5000 lamps connected in parallel. Each lamp has a resistance of $220 \Omega$ and is operated at 220 $\mathrm{V}$. The total current supplied by the station is

1 $2500 \mathrm{~A}$
2 $3500 \mathrm{~A}$
3 $5000 \mathrm{~A}$
4 $10000 \mathrm{~A}$
UPSEE - 2009
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Current Electricity

151921 The resistance of wire at $20^{\circ} \mathrm{C}$ is $20 \Omega$ and $500^{\circ} \mathrm{C}$ is $60 \Omega$. At which temperature its resistance will be $25 \Omega$

1 $50^{\circ} \mathrm{C}$
2 $60^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $80^{\circ} \mathrm{C}$
BITSAT-2017
Current Electricity

151922 The ratio of the resistance of conductor at temperature $15^{\circ} \mathrm{C}$ to its resistance at temperature $37.5^{\circ} \mathrm{C}$ is $4: 5$. The temperature coefficient of resistance the conductor is

1 $\frac{1}{25}{ }^{\circ} \mathrm{C}^{-1}$
2 $\frac{1}{50}{ }^{\circ} \mathrm{C}^{-1}$
3 $\frac{1}{80}^{\circ} \mathrm{C}^{-1}$
4 $\frac{1}{75}{ }^{\circ} \mathrm{C}^{-1}$
Manipal UGET-2017
Current Electricity

151923 The resistance of an ammeter is $13 \Omega$ and its scale is graduated for a current upto $100 \mathrm{~A}$. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750 \mathrm{~A}$ by this meter. The value of shunt resistance is

1 $20 \Omega$
2 $2 \Omega$
3 $0.2 \Omega$
4 $2 \mathrm{k} \Omega$
UPSEE - 2010
Current Electricity

151924 A small power station supplies electricity to 5000 lamps connected in parallel. Each lamp has a resistance of $220 \Omega$ and is operated at 220 $\mathrm{V}$. The total current supplied by the station is

1 $2500 \mathrm{~A}$
2 $3500 \mathrm{~A}$
3 $5000 \mathrm{~A}$
4 $10000 \mathrm{~A}$
UPSEE - 2009
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Current Electricity

151921 The resistance of wire at $20^{\circ} \mathrm{C}$ is $20 \Omega$ and $500^{\circ} \mathrm{C}$ is $60 \Omega$. At which temperature its resistance will be $25 \Omega$

1 $50^{\circ} \mathrm{C}$
2 $60^{\circ} \mathrm{C}$
3 $70^{\circ} \mathrm{C}$
4 $80^{\circ} \mathrm{C}$
BITSAT-2017
Current Electricity

151922 The ratio of the resistance of conductor at temperature $15^{\circ} \mathrm{C}$ to its resistance at temperature $37.5^{\circ} \mathrm{C}$ is $4: 5$. The temperature coefficient of resistance the conductor is

1 $\frac{1}{25}{ }^{\circ} \mathrm{C}^{-1}$
2 $\frac{1}{50}{ }^{\circ} \mathrm{C}^{-1}$
3 $\frac{1}{80}^{\circ} \mathrm{C}^{-1}$
4 $\frac{1}{75}{ }^{\circ} \mathrm{C}^{-1}$
Manipal UGET-2017
Current Electricity

151923 The resistance of an ammeter is $13 \Omega$ and its scale is graduated for a current upto $100 \mathrm{~A}$. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto $750 \mathrm{~A}$ by this meter. The value of shunt resistance is

1 $20 \Omega$
2 $2 \Omega$
3 $0.2 \Omega$
4 $2 \mathrm{k} \Omega$
UPSEE - 2010
Current Electricity

151924 A small power station supplies electricity to 5000 lamps connected in parallel. Each lamp has a resistance of $220 \Omega$ and is operated at 220 $\mathrm{V}$. The total current supplied by the station is

1 $2500 \mathrm{~A}$
2 $3500 \mathrm{~A}$
3 $5000 \mathrm{~A}$
4 $10000 \mathrm{~A}$
UPSEE - 2009
For More Updates join with Us