05. Heating Effect of Current (Energy, Power)
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Current Electricity

152690 A railway compartment is lit up by thirteen lamps each taking $2.1 \mathrm{amp}$ at 15 volts. The heat generated per second in each lamp will be

1 $4.35 \mathrm{cal}$
2 $5.73 \mathrm{cal}$
3 $7.5 \mathrm{cal}$
4 $2.5 \mathrm{cal}$
J and K CET- 2005
Current Electricity

152691 A $200 \mathrm{~W}$ and a $100 \mathrm{~W}$ bulb, both meant for operation at $220 \mathrm{~V}$ are connected in series. When connected to a $220 \mathrm{~V}$ supply the power consumed by the combination is

1 $33.3 \mathrm{~W}$
2 $66.7 \mathrm{~W}$
3 $300 \mathrm{~W}$
4 $100 \mathrm{~W}$
J and K CET- 2003
Current Electricity

152692 Two electric bulbs, one of $200 \mathrm{~V}, 40 \mathrm{~W}$ and other $200 \mathrm{~V}, 100 \mathrm{~W}$ are connected in a domestic circuit Then

1 the resistance of $40 \mathrm{~W}$ bulb is more than the $100 \mathrm{~W}$ bulb
2 the resistance of $100 \mathrm{~W}$ bulb is more than the $40 \mathrm{~W}$ bulb
3 they have equal current through them
4 they have equal resistance
J and K CET- 1999
Current Electricity

152693 A battery is charged at a potential of $15 \mathrm{~V}$ for 8 $h$ when the current flowing is $10 \mathrm{~A}$. The battery on discharge supplies a current of $5 \mathrm{~A}$ for $15 \mathrm{~h}$. The mean terminal voltage during discharge is $14 \mathrm{~V}$. The watt-hour efficiency of the battery is

1 $82.5 \%$
2 $80 \%$
3 $90 \%$
4 $87.5 \%$
AIPMT-2004
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Current Electricity

152690 A railway compartment is lit up by thirteen lamps each taking $2.1 \mathrm{amp}$ at 15 volts. The heat generated per second in each lamp will be

1 $4.35 \mathrm{cal}$
2 $5.73 \mathrm{cal}$
3 $7.5 \mathrm{cal}$
4 $2.5 \mathrm{cal}$
J and K CET- 2005
Current Electricity

152691 A $200 \mathrm{~W}$ and a $100 \mathrm{~W}$ bulb, both meant for operation at $220 \mathrm{~V}$ are connected in series. When connected to a $220 \mathrm{~V}$ supply the power consumed by the combination is

1 $33.3 \mathrm{~W}$
2 $66.7 \mathrm{~W}$
3 $300 \mathrm{~W}$
4 $100 \mathrm{~W}$
J and K CET- 2003
Current Electricity

152692 Two electric bulbs, one of $200 \mathrm{~V}, 40 \mathrm{~W}$ and other $200 \mathrm{~V}, 100 \mathrm{~W}$ are connected in a domestic circuit Then

1 the resistance of $40 \mathrm{~W}$ bulb is more than the $100 \mathrm{~W}$ bulb
2 the resistance of $100 \mathrm{~W}$ bulb is more than the $40 \mathrm{~W}$ bulb
3 they have equal current through them
4 they have equal resistance
J and K CET- 1999
Current Electricity

152693 A battery is charged at a potential of $15 \mathrm{~V}$ for 8 $h$ when the current flowing is $10 \mathrm{~A}$. The battery on discharge supplies a current of $5 \mathrm{~A}$ for $15 \mathrm{~h}$. The mean terminal voltage during discharge is $14 \mathrm{~V}$. The watt-hour efficiency of the battery is

1 $82.5 \%$
2 $80 \%$
3 $90 \%$
4 $87.5 \%$
AIPMT-2004
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Current Electricity

152690 A railway compartment is lit up by thirteen lamps each taking $2.1 \mathrm{amp}$ at 15 volts. The heat generated per second in each lamp will be

1 $4.35 \mathrm{cal}$
2 $5.73 \mathrm{cal}$
3 $7.5 \mathrm{cal}$
4 $2.5 \mathrm{cal}$
J and K CET- 2005
Current Electricity

152691 A $200 \mathrm{~W}$ and a $100 \mathrm{~W}$ bulb, both meant for operation at $220 \mathrm{~V}$ are connected in series. When connected to a $220 \mathrm{~V}$ supply the power consumed by the combination is

1 $33.3 \mathrm{~W}$
2 $66.7 \mathrm{~W}$
3 $300 \mathrm{~W}$
4 $100 \mathrm{~W}$
J and K CET- 2003
Current Electricity

152692 Two electric bulbs, one of $200 \mathrm{~V}, 40 \mathrm{~W}$ and other $200 \mathrm{~V}, 100 \mathrm{~W}$ are connected in a domestic circuit Then

1 the resistance of $40 \mathrm{~W}$ bulb is more than the $100 \mathrm{~W}$ bulb
2 the resistance of $100 \mathrm{~W}$ bulb is more than the $40 \mathrm{~W}$ bulb
3 they have equal current through them
4 they have equal resistance
J and K CET- 1999
Current Electricity

152693 A battery is charged at a potential of $15 \mathrm{~V}$ for 8 $h$ when the current flowing is $10 \mathrm{~A}$. The battery on discharge supplies a current of $5 \mathrm{~A}$ for $15 \mathrm{~h}$. The mean terminal voltage during discharge is $14 \mathrm{~V}$. The watt-hour efficiency of the battery is

1 $82.5 \%$
2 $80 \%$
3 $90 \%$
4 $87.5 \%$
AIPMT-2004
For More Updates join with Us
Current Electricity

152690 A railway compartment is lit up by thirteen lamps each taking $2.1 \mathrm{amp}$ at 15 volts. The heat generated per second in each lamp will be

1 $4.35 \mathrm{cal}$
2 $5.73 \mathrm{cal}$
3 $7.5 \mathrm{cal}$
4 $2.5 \mathrm{cal}$
J and K CET- 2005
Current Electricity

152691 A $200 \mathrm{~W}$ and a $100 \mathrm{~W}$ bulb, both meant for operation at $220 \mathrm{~V}$ are connected in series. When connected to a $220 \mathrm{~V}$ supply the power consumed by the combination is

1 $33.3 \mathrm{~W}$
2 $66.7 \mathrm{~W}$
3 $300 \mathrm{~W}$
4 $100 \mathrm{~W}$
J and K CET- 2003
Current Electricity

152692 Two electric bulbs, one of $200 \mathrm{~V}, 40 \mathrm{~W}$ and other $200 \mathrm{~V}, 100 \mathrm{~W}$ are connected in a domestic circuit Then

1 the resistance of $40 \mathrm{~W}$ bulb is more than the $100 \mathrm{~W}$ bulb
2 the resistance of $100 \mathrm{~W}$ bulb is more than the $40 \mathrm{~W}$ bulb
3 they have equal current through them
4 they have equal resistance
J and K CET- 1999
Current Electricity

152693 A battery is charged at a potential of $15 \mathrm{~V}$ for 8 $h$ when the current flowing is $10 \mathrm{~A}$. The battery on discharge supplies a current of $5 \mathrm{~A}$ for $15 \mathrm{~h}$. The mean terminal voltage during discharge is $14 \mathrm{~V}$. The watt-hour efficiency of the battery is

1 $82.5 \%$
2 $80 \%$
3 $90 \%$
4 $87.5 \%$
AIPMT-2004