Five resistors of given values are connected | vedclass

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

Question

(B) The given circuit is a Wheatstone bridge. In a Wheatstone bridge,if the ratio of resistances in opposite arms is equal,the bridge is balanced. Her

Vedclass · Accepted Answer

Zero

Vedclass · Answer

(B) The given circuit is a Wheatstone bridge. In a Wheatstone bridge,if the ratio of resistances in opposite arms is equal,the bridge is balanced. Here,the resistances are $R_{AB} = R$,$R_{BC} = R$,$R_{AD} = R$,and $R_{DC} = R$. Since $\frac{R_{AB}}{R_{AD}} = \frac{R}{R} = 1$ and $\frac{R_{BC}}{R_{DC}} = \frac{R}{R} = 1$,the ratio is equal. Therefore,the potential at point $B$ is equal to the potential at point $D$ $(V_B = V_D)$. Since there is no potential difference between $B$ and $D$,no current flows through the resistor $4R$ connected in the arm $BD$. Thus,the current in the arm $BD$ is $0$.

Five resistors of given values are connected together as shown in the figure. The current in the arm $BD$ will be

Similar Questions

Potential difference between $A$ and $B$ is .............. $V$.

Refer to the circuit diagram given below. The heat generated across the $6\text{ }\Omega$ resistance in $100\text{ s}$ is $\frac{\alpha}{100}\text{ J}$. The value of $\alpha$ is . . . . . . . (Nearest integer)

The galvanometer has no deflection and the length of wire $AB$ is $350 \, cm$. Then $AC$ equals to ............... $cm$.

In the given circuit,if no current flows through the ammeter,what is the value of $X$ in $\Omega$?

In the given circuit,if the potential at point $B$ is $24 \ V$,the potential at point $A$ is: (in $V$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module