Electrical Energy and Power Through a Resistor
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PHXII03:CURRENT ELECTRICITY

357116 Two bulbs \(100\,\;W,250\,\;V\) and \(200\;\,W,250\,\;V\) are connected in parallel across a \(500\,\;V\) line. Then,

1 \(100\;\,W\) bulb will be fused
2 \(200\;\,W\) bulb will be fused
3 both bulbs will be fused
4 no bulb will be fused
PHXII03:CURRENT ELECTRICITY

357117 If power dissipated in the \({9 \Omega}\) resistor in the circuit shown is 36 Watt, the potential difference across the \({2 \Omega}\) resistor is
supporting img

1 \({4 V}\)
2 \({8 V}\)
3 \({10 V}\)
4 \({2 V}\)
PHXII03:CURRENT ELECTRICITY

357118 A hot electric iron has a resistance of \(80\,\Omega \) and is used on a \(200\;V\) source. The electrical energy spent, if it is used for \(2\,hr\), will be:

1 \(8000\,Wh\)
2 \(2000\,Wh\)
3 \(1000\,Wh\)
4 \(800\,Wh\)
PHXII03:CURRENT ELECTRICITY

357119 Two bulbs \(40\,\;W\) and \(60\;\,W\) of rated voltage \(240\,\;V\) are connected in series across a potential difference of \(420\;\,V.\) Which bulb will work at above its rated voltage?

1 \(40\,\;W\) bulb
2 \(60\,\;W\) bulb
3 Both bulbs will work
4 \(20\;\,W\) bulb
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PHXII03:CURRENT ELECTRICITY

357116 Two bulbs \(100\,\;W,250\,\;V\) and \(200\;\,W,250\,\;V\) are connected in parallel across a \(500\,\;V\) line. Then,

1 \(100\;\,W\) bulb will be fused
2 \(200\;\,W\) bulb will be fused
3 both bulbs will be fused
4 no bulb will be fused
PHXII03:CURRENT ELECTRICITY

357117 If power dissipated in the \({9 \Omega}\) resistor in the circuit shown is 36 Watt, the potential difference across the \({2 \Omega}\) resistor is
supporting img

1 \({4 V}\)
2 \({8 V}\)
3 \({10 V}\)
4 \({2 V}\)
PHXII03:CURRENT ELECTRICITY

357118 A hot electric iron has a resistance of \(80\,\Omega \) and is used on a \(200\;V\) source. The electrical energy spent, if it is used for \(2\,hr\), will be:

1 \(8000\,Wh\)
2 \(2000\,Wh\)
3 \(1000\,Wh\)
4 \(800\,Wh\)
PHXII03:CURRENT ELECTRICITY

357119 Two bulbs \(40\,\;W\) and \(60\;\,W\) of rated voltage \(240\,\;V\) are connected in series across a potential difference of \(420\;\,V.\) Which bulb will work at above its rated voltage?

1 \(40\,\;W\) bulb
2 \(60\,\;W\) bulb
3 Both bulbs will work
4 \(20\;\,W\) bulb
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PHXII03:CURRENT ELECTRICITY

357116 Two bulbs \(100\,\;W,250\,\;V\) and \(200\;\,W,250\,\;V\) are connected in parallel across a \(500\,\;V\) line. Then,

1 \(100\;\,W\) bulb will be fused
2 \(200\;\,W\) bulb will be fused
3 both bulbs will be fused
4 no bulb will be fused
PHXII03:CURRENT ELECTRICITY

357117 If power dissipated in the \({9 \Omega}\) resistor in the circuit shown is 36 Watt, the potential difference across the \({2 \Omega}\) resistor is
supporting img

1 \({4 V}\)
2 \({8 V}\)
3 \({10 V}\)
4 \({2 V}\)
PHXII03:CURRENT ELECTRICITY

357118 A hot electric iron has a resistance of \(80\,\Omega \) and is used on a \(200\;V\) source. The electrical energy spent, if it is used for \(2\,hr\), will be:

1 \(8000\,Wh\)
2 \(2000\,Wh\)
3 \(1000\,Wh\)
4 \(800\,Wh\)
PHXII03:CURRENT ELECTRICITY

357119 Two bulbs \(40\,\;W\) and \(60\;\,W\) of rated voltage \(240\,\;V\) are connected in series across a potential difference of \(420\;\,V.\) Which bulb will work at above its rated voltage?

1 \(40\,\;W\) bulb
2 \(60\,\;W\) bulb
3 Both bulbs will work
4 \(20\;\,W\) bulb
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PHXII03:CURRENT ELECTRICITY

357116 Two bulbs \(100\,\;W,250\,\;V\) and \(200\;\,W,250\,\;V\) are connected in parallel across a \(500\,\;V\) line. Then,

1 \(100\;\,W\) bulb will be fused
2 \(200\;\,W\) bulb will be fused
3 both bulbs will be fused
4 no bulb will be fused
PHXII03:CURRENT ELECTRICITY

357117 If power dissipated in the \({9 \Omega}\) resistor in the circuit shown is 36 Watt, the potential difference across the \({2 \Omega}\) resistor is
supporting img

1 \({4 V}\)
2 \({8 V}\)
3 \({10 V}\)
4 \({2 V}\)
PHXII03:CURRENT ELECTRICITY

357118 A hot electric iron has a resistance of \(80\,\Omega \) and is used on a \(200\;V\) source. The electrical energy spent, if it is used for \(2\,hr\), will be:

1 \(8000\,Wh\)
2 \(2000\,Wh\)
3 \(1000\,Wh\)
4 \(800\,Wh\)
PHXII03:CURRENT ELECTRICITY

357119 Two bulbs \(40\,\;W\) and \(60\;\,W\) of rated voltage \(240\,\;V\) are connected in series across a potential difference of \(420\;\,V.\) Which bulb will work at above its rated voltage?

1 \(40\,\;W\) bulb
2 \(60\,\;W\) bulb
3 Both bulbs will work
4 \(20\;\,W\) bulb
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