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JEE Advanced 2008Paper 1

Exam: JEE Advanced
Year: 2008
Paper: Paper 1
Subject: Physics
Chapter: Current Electricity

JEE Advanced 2008 · Paper 1 · Physics · Current Electricity

Figure shows three resistor configurations R_1, R_2 and R_3...

Figure shows three resistor configurations

R_1, R_2

and

R_3

connected to

3 \mathrm{~V}

battery. If the power dissipated by the configuration

R_1, R_2

and

R_3

is

P_1, P_2

and

P_3

, respectively, then Figure shows three resistor configurations R_1, R_2 and R_3 connected to 3 ~V battery. If the power dissipated by the

Figure shows three resistor configurations R_1, R_2 and R_3 connected to 3 ~V battery. If the power dissipated by the

Options

A $P_1>P_2>P_3$
B $P_1>P_3>P_2$
C $P_2>P_1>P_3$
D $P_3>P_2>P_1$

Correct answer

C. $P_2>P_1>P_3$

Step-by-step solution

Applying

P=\frac{V^2}{R}

R_1=1 \Omega, R_2=0.5 \Omega

and

R_3=2 \Omega, V_1=V_2=V_3=3

volt

\therefore \quad P_1=\frac{(3)^2}{1}=9 \mathrm{~W}

\quad P_2=\frac{(3)^2}{0.5}=18 \mathrm{~W}

and

P_3=\frac{(3)^2}{2}=4.5 \mathrm{~W}

\therefore \quad P_2>P_1>P_3

\therefore \quad

correct option is (c).

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