When three identical bulbs are connected in series, the consumed power is \(10\) W. If they are now connected in parallel then the consumed power will be:
1. \(30\) W
2. \(90\) W
3. \(\frac{10}{3}\) W
4. \(270\) W
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn a hot wire ammeter due to the flowing of the current, the temperature of the wire is increased by \(5^{\circ}\) C. If the value of the current is doubled, then the increase in temperature will be:
1. \(15^{\circ}\) C
2. \(20^{\circ}\) C
3. \(25^{\circ}\) C
4. \(30^{\circ}\) C
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf the power dissipated in \(5~\Omega\) is \(20\) W then the power dissipated in \(4~\Omega\) is:
1. \(4\) W
2. \(6\) W
3. \(10\) W
4. \(20\) W
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPrefer Books for Question Practice? Get NEETprep's Unique MCQ Books with Online Audio/Video/Text Solutions via Telegram Bot
NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf there are two bulbs of (\(40~\text{W},200~\text{V}\)), and (\(100~\text{W},200~\text{V}\)), then the correct relation for their resistance is:
1. \(R_{40}<R_{100}\)
2. \(R_{40}>R_{100}\)
3. \(R_{40}=R_{100}\)
4. no relation can be predicted
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo \(220\)-volts, \(100\)-watts bulbs are connected first in series and then in parallel. Each time the combination is connected to a \(220\)-volts AC supply line. The power drawn by the combination in each case respectively will be:
1. \(50\) watts, \(100\) watts
2. \(100\) watts, \(50\) watts
3. \(200\) watts, \(150\) watts
4. \(50\) watts, \(200\) watts
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAn electric kettle has two heating coils. When one of the coils is connected to an a.c. source, the water in the kettle boils in \(10\) minutes. When the other coil is used the water boils in \(40\) minutes. If both the coils are connected in parallel, the time taken by the same quantity of water to boil will be:
1. \(8\) min
2. \(4\) min
3. \(25\) min
4. \(15\) min
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyA fuse wire is a wire of:
1. high resistance and high melting point
2. high resistance and low melting point
3. low resistance and low melting point
4. low resistance and high melting point
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen three identical bulbs of \(60\) watts and \(200\)-volt rating are connected in series to a \(200\)-volt supply, the power drawn by them will be:
1. \(180\) watts
2. \(10\) watts
3. \(20\) watts
4. \(60\) watts
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn India electricity is supplied for domestic use at \(220\) V. It is supplied at \(110\) V in the USA. If the resistance of a \(60\) W bulb for use in India is \(R\), the resistance of a \(60\) W bulb for use in the USA will be:
1. | \(2R\) | 2. | \(\dfrac{R}{4}\) |
3. | \(\dfrac{R}{2}\) | 4. | \(R\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology