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IMPORTANT

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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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Important Questions on Heating Effects of Current

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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MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 8

Two electric bulbs rated as

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

P_{1}

and

P_{2}

powers, respectively,

MEDIUM

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 9

In the circuit shown in figure,
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HARD

JEE Advanced

IMPORTANT

PHYSICS for Joint Entrance Examination JEE (Advanced) Electrostatics and Current Electricity>Chapter 7 - Heating Effects of Current>Exercise>Q 10

A variable current flow through a

1 Ω

resistor for

2 s

. Time dependence of the current is shown in the graph.
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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 11

Two light bulbs shown in the circuit have ratings

A (24 V, 24 W)

and

B (24 V, 36 W)

as shown. When the switch is closed.
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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 12

A series circuit consists of two capacitors, a resistor and an ideal voltage source. The circuit is initially at steady state. Now a conducting wire is shorted across the capacitor $C$ as shown by dotted line. After shorting the wire, select the correct statement/statements.
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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 13

$A B$ is part of a circuit as shown that absorbs energy at a rate of $50 W$ . $E$ is an emf device that has no internal resistance.
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Important Questions on Heating Effects of Current

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