In the adjoining circuit,the battery E_1 has | vedclass

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

Question

(B) For the galvanometer $G$ to read zero,no current flows through the branch containing $G$ and $E$.This implies that the potential difference across

Vedclass · Accepted Answer

$100$

Vedclass · Answer

(B) For the galvanometer $G$ to read zero,no current flows through the branch containing $G$ and $E$.This implies that the potential difference across the resistance $X$ must be equal to the $e.m.f.$ of the battery $E$.Let $I$ be the current flowing through the loop containing $E_1$,$500 \, \Omega$,and $X$.Using Ohm's law,the current $I$ is given by $I = \frac{E_1}{500 + X}$.The potential difference across $X$ is $V_X = I \cdot X = \left( \frac{E_1}{500 + X} \right) X$.Since $V_X = E$,we have $\left( \frac{12}{500 + X} \right) X = 2$.Dividing both sides by $2$,we get $\left( \frac{6}{500 + X} \right) X = 1$.$6X = 500 + X$.$5X = 500$.$X = 100 \, \Omega$.

In the adjoining circuit,the battery $E_1$ has an $e.m.f.$ of $12 \, V$ and zero internal resistance,while the battery $E$ has an $e.m.f.$ of $2 \, V$. If the galvanometer $G$ reads zero,then the value of the resistance $X$ in $\Omega$ is

Similar Questions

If in the experiment of Wheatstone's bridge,the positions of cells and galvanometer are interchanged,then the balance point will

In the given circuit,the current through $AB$ is zero. What will be the value of the unknown resistance $X$ in $\Omega$?

Consider the following circuit shown below. All the resistors are identical. The ratio of $I / I^{\prime}$ is

In the part of a circuit shown in the figure,the potential difference $(V_G - V_H)$ between points $G$ and $H$ will be ............... $V$.

In the circuit shown in the figure,the current drawn from the battery is $4 \, A$. If the $10 \, \Omega$ resistor is replaced by a $20 \, \Omega$ resistor,then the current drawn from the circuit will be .............. $A$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module