In the adjoining circuit, the battery $E_1$ has an emf of $12\, volt$ and zero internal resistance while the battery $E_2$ has an $emf$ of $2\, volt$. If the galvanometer $G$ reads zero, then the value of the resistance $X$ (in $ohm$ ) is
Medium
Download our app for free and get started
Current across $(500 \Omega) \rightarrow$
$I=\frac{E_{1}-E_{2}}{500}$ ............$(1)$
$\mathrm{E}_{2}=\mathrm{IX}$ .........$(2)$
Download our appand 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.*
Similar Questions
- 1In the circuit shown, the value of each resistance is $r$, then equivalent resistance of circuit between points $A$ and $B$ will beView Solution
- 2By error, a student places moving-coil voltmeter $V$ (nearly ideal) in series with the resistance in a circuit in order to read the current, as shown. The voltmeter reading will be ............ $V$View Solution
- 3The current through a wire depends on time as $i = (2+3t)\, mA$. The charge crossing through a section of the wire in $1\, min$ is .............. $\mathrm{C}$View Solution
- 4Two wires $A$ and $B $ of same material and same mass have radius $2r$ and $r$ . If resistance of wire $A$ is $34\,\Omega $, then resistance of $B$ will be ............ $\Omega$View Solution
- 5Two batteries, one of $emf$ $18\, volts$ and internal resistance $2\,\Omega $ and the other of $emf$ $12\, volt$ and internal resistance $1\,\Omega $, are connected as shown. The voltmeter $V$ will record a reading of .............. $\mathrm{volt}$View Solution
- 6If all the resistors shown have the value $2\, ohm$ each, the equivalent resistance over $AB$ isView Solution
- 7If power in $3\,\Omega $ is $27\,W$ then what is the power in $2\,\Omega $ ................. $W$View Solution
- 8View SolutionWhen there is an electric current through a conducting wire along its length, then an electric field must exist
- 9The resistance of the filament of a lamp increases with the increase in temperature. A lamp rated $100\, W, 220\, V$ is connected across $220\, V$ power supply. If the voltage drops by $10\%$ then the power of lamp will beView Solution
- 10Twelve wires each having resistance $2 \Omega$ are joined to form a cube. A battery of $6 \mathrm{~V}$ emf is joined across point $\mathrm{a}$ and $\mathrm{c}$. The voltage difference between $e$ and $f$ is.______.V.View Solution
