The bulb which glows with maximum intensity i | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) First,simplify the circuit. The circuit consists of two parts in series: part $A$ and part $B$.Part $A$ has resistors of $2 \Omega, 3 \Omega$,and

Vedclass · Accepted Answer

$4 \Omega$ bulb

Vedclass · Answer

(A) First,simplify the circuit. The circuit consists of two parts in series: part $A$ and part $B$.Part $A$ has resistors of $2 \Omega, 3 \Omega$,and $6 \Omega$ in parallel. The equivalent resistance $R_A$ is given by $\frac{1}{R_A} = \frac{1}{2} + \frac{1}{3} + \frac{1}{6} = \frac{3+2+1}{6} = 1 \Omega$,so $R_A = 1 \Omega$.Part $B$ has resistors of $4 \Omega$ and $5 \Omega$ in parallel. The equivalent resistance $R_B$ is given by $\frac{1}{R_B} = \frac{1}{4} + \frac{1}{5} = \frac{5+4}{20} = \frac{9}{20} \Omega$,so $R_B = \frac{20}{9} \Omega \approx 2.22 \Omega$.Since $R_B > R_A$,the potential drop across part $B$ $(V_B)$ is greater than the potential drop across part $A$ $(V_A)$.For resistors in parallel,power $P = \frac{V^2}{R}$. Since $V_B$ is constant for both resistors in part $B$,the resistor with the smaller resistance will have higher power dissipation.Comparing the $4 \Omega$ and $5 \Omega$ resistors in part $B$,the $4 \Omega$ resistor has lower resistance and thus dissipates more power.Therefore,the $4 \Omega$ bulb glows with maximum intensity.

The bulb which glows with maximum intensity in the given circuit is

Similar Questions

When current is passed in an antimony-bismuth couple,then:

$A$ certain charge liberates $0.8\, gm$ of ${O_2}$. The same charge will liberate how many $gm$ of silver?

In the circuit diagram shown in the figure below, the current flowing through the resistance $3\, \Omega$ is $\frac{x}{3}\, A$. The value of $x$ is $...........$

The variation of current $(I)$ and voltage $(V)$ is as shown in figure $A$. The variation of power $P$ with current $I$ is best shown by which of the following graphs?

Total $emf$ produced in a thermocouple does not depend on

Vedclass Test Series

Exam Paper Generator

Online Exam Module