In the following Wheatstone bridge $P/Q = R/S$. If key $K$ is closed, then the galvanometer will show deflection
Easy
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
- 1View SolutionTwo heating coils, one of fine wire and the other of thick wire of the same material and of the same length are connected in series and in parallel. Which of the following statement is correct
- 2Column $- I$ gives certain physical terms associated with flow of current through a metallic conductor. Column $- II$ gives some mathematical relations involving electrical quantities. Match Column $- I$ and Column $- II$ with appropriate relations.View Solution
Column $- I$ Column $- II$ $(A)$ Drift Velocity $(P)$ $\frac{m}{n e^{2} \rho}$ $(B)$ Electrical Resistivity $(Q)$ $\mathrm{ne} v_{\mathrm{d}}$ $(C)$ Relaxation Period $(R)$ $\frac{\mathrm{eE}}{\mathrm{m}} \tau$ $(D)$ Current Density $(S)$ $\frac{E}{J}$ - 3The ammeter $A$ reads $2\, A$ and the voltmeter $V$ reads $20\, V$. the value of resistance $R$ is (Assuming finite resistance's of ammeter and voltmeter)View Solution
- 4A wire is connected to a battery between the point $M$ and $N$ as shown in the figure $(1)$. The same wire is bent in the form of a square and then connected to the battery between the points $M$ and $N$ as shown in the figure $(2)$. Which of the following quantities increases?View Solution
- 5Figure below shows a portion of an electric circuit with the currents in amperes and their directions. The magnitude and direction of the current in the portion $P Q$ isView Solution
- 6View SolutionOhm's law is true
- 7The drift velocity of electrons for a conductor connected in an electrical circuit is $V _{ d }$. The conductor in now replaced by another conductor with same material and same length but double the area of cross section. The applied voltage remains same. The new drift velocity of electrons will beView Solution
- 8A voltmeter having a resistance of $998\, ohms$ is connected to a cell of $e.m.f.$ $2\, volt$ and internal resistance $2\, ohm$. The error in the measurement of $e.m.f.$ will beView Solution
- 9A $6\, volt$ battery of negligible internal resistance resistance is connected across a uniform wire $AB$ of length $100\,cm$. The positive terminal of another battery of $emf$ $4\,V$ and internal resistance $1\,\Omega $ is joined to the point $A$ as shown in fig. Take the potential at $B$ to be zero. At which point $D$ of the wire $AB$, from left the potential is equal to the potential at $C$ ? ...................... $cm$ (approximately)View Solution
- 10The effective resistance between $A$ and $B$, if resistance of each resistor is $R$, will beView Solution
