For the post office box arrangement to determine the value of unknown resistance the unknown resistance should be connected between
IIT 2004, Medium
Download our app for free and get started
(c) Post office box is based on the principle of Wheatstone's bridge
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
- 1The potential difference in open circuit for a cell is $2.2\, volts$. When a $4\, ohm$ resistor is connected between its two electrodes the potential difference becomes $2\, volts$. The internal resistance of the cell will be .............. $ohm$View Solution
- 2View SolutionDiagram shows a circuit diagram choose incorrect statement
- 3One $kg$ of water, at $20\,^oC$, is heated in an electric kettle whose heating element has a mean (temperature averaged) resistance of $20\, \Omega $. The rms voltage in the mains is $200\, V$. Ignoring heat loss from the kettle, time taken for water to evaporate fully, is close to.......... $\min$ [Specific heat of water $= 4200\, J/kg\, ^oC$), Latent heat of water $= 2260\, k\,J/kg$]View Solution
- 4In the network of resistors shown in the adjoining figure, the equivalent resistance between $A$ and $B$ is ............ $ohm$View Solution
- 5In the given figure each plate of capacitance $C$ has partial value of chargeView Solution
- 6The total power dissipated in watt in the circuit shown here is ............. $W$View Solution
- 7To verify Ohm's law, a student connects the voltmeter across the battery as, shown in the figure. The measured voltage is plotted as a function of the current, and the following graph is obtained If $V_0$ is almost zero, identify the correct statementView Solution
- 8In the following Wheatstone bridge $P/Q = R/S$. If key $K$ is closed, then the galvanometer will show deflectionView Solution
- 9Wheat stone bridge is balanced. Find ratio of electric power dissipated in $(P + Q)$ to $(R + S)$View Solution
- 10In the given circuit, the potential of the point $E$ isView Solution
