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JEE Advanced
IMPORTANT
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The circuit below is made up using identical light bulbs. The light bulbs of maximum brightness of the following will be
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Important Questions on Heating Effects of Current

HARD
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 50

Assuming all bulbs are identical, rank the brightness’s of the bulbs, from brightest to dimmest.


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MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 1
Two bulbs consume same energy when operated at 200 V and 300 V, respectively. When these bulbs are connected in series across a dc source of 500 V, then
MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 2
An element with emf ε and internal resistance r is connected across an external resistance R. The maximum power in external circuit is 9 W. The current flowing through the circuit in these conditions is 3 A. Then which of the following is/are correct?
MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 3
Two electric bulbs rated 25 W, 220 V and 100 W, 220 V are connected in series across a 220 V voltage source. The 25 W and 100 W bulbs now draw P1 and P2 powers, respectively.
HARD
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 4
Two bulbs 25 W,100 V (upper bulb in the figure) and 100 W, 200 V (lower bulb in the figure) arc connected in the circuit as shown in the figure. Choose the correct answers.
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MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 5
In the figure, a battery of emf E has internal resistance r and a variable resistor. At an instant, the current flowing through the circuit is i, the potential difference between the terminals of cells is V, thermal power developed in the external circuit is P, and thermal power developed in the cell is equal to the fraction η of total electricity generated in it. Which of the following graphs is/are correct?
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MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 6
Which of the following statements are correct?
MEDIUM
JEE Advanced
IMPORTANT
PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 7
A battery of emf 2 V and internal resistance 1 Ω is connected across terminals A and B of the circuit shown in the figure.
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