Different combination of $3$ resistors of equal resistance $R$ are shown in the figures.
The increasing order for power dissipation is:
A$P _{ A } < P _{ B } < P _{ C } < P _{ D }$
B$P _{ C } < P _{ D } < P _{ A } < P _{ B }$
C$P _{ B } < P _{ C } < P _{ D } < P _{ A }$
D$P _{ C } < P _{ B } < P _{ A } < P _{ D }$
JEE MAIN 2023, Medium
Download our app for free and get started
D$P _{ C } < P _{ B } < P _{ A } < P _{ D }$
d Sol. $\quad P = I ^2 R$
$R _1=\frac{3 R }{2}, R _2=\frac{2 R }{3}, R _3=\frac{ R }{3}, R _4=3 R$
Since $i$ is same, hence $P \alpha R$ so options $(4)$ is correct
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
In the figure shown, what is the current (in Ampere) drawn from the battery ? You are given $R_1 = 15\,\Omega $$,R _2 = 10\,\Omega ,$$ R_3 = 20\,\Omega ,$$ R_4 = 5\,\Omega ,$$R_5 = 25\,\Omega ,$$R_6 = 30\,\Omega , $$E = 15\,V$
A wire of length $100\, cm$ is connected to a cell of $emf$ $2\, V$ and negligible internal resistance. The resistance of the wire is $3\, \,\Omega$. The additional resistance required to produce a potential drop of $1$ milli volt per cm is ............... $\Omega $
The length of a given cylindrical wire is increased to double of its original length. The percentage increase in the resistance of the wire will be..... $\%$.
Two bulbs $X$ and $Y$ having same voltage rating and of power $40\, watt$ and $60\, watt$ respectively are connected in series across a potential difference of $300\, volt$, then
A platinum resistance thermometer has a resistance of $50\,\Omega $ at $20\,^o C$. When dipped in a liquid the resistance becomes $76.8\,\Omega $. The temperature coefficient of resistance for platinum is $\alpha = 3.92 \times {10^{ - 3}}\,^o C$. The temperature of the liquid is .............. $^o C$