The figure shows a network of resistors and $a$ battery. If $1\,A$ current flowsthrough the branch $CF$, then answer the following questions The $\mathrm{emf}$ $E$ of the battery is If a zero resistance wire is connected in parallel to branch $CF$ ............... $V$
Advanced
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
- 1A fuse wire with radius $1\, mm$ blows at $1.5\, amp$. The radius of the fuse wire of the same material to blow at $3\,A$ will beView Solution
- 2Current measured by the ammeter $(A)$ in the reported circuit when no current flows through $10\,\Omega$ resistance. will be________$A$View Solution
- 3A wire of length $100\, cm$ is connected to a cell of $emf$ $2\, V$ and negligible internal resistance. The resistance of the wire is $3\, \,\Omega$. The additional resistance required to produce a potential drop of $1$ milli volt per cm is ............... $\Omega $View Solution
- 4Two current elements $P$ and $Q$ have current voltage characteristics as shown below :View Solution
Which of the graphs given below represents current voltage characteristics when $P$ and $Q$ are in series.
- 5Two resistances of $400\,\Omega $ and $800\,\Omega $ are connected in series with a $6\,volt $ battery of negligible internal resistance. A voltmeter of resistance $10,000\,\Omega $ is used to measure the potential difference across $400\,\Omega $ . The error in the measurement of potential difference (in volt) approximately isView Solution
- 6During an experiment with a metre bridge, the galvanometer shows a null point when the joceky is pressed at $40.0 \ cm$ using a standard resistance of $90 \ \Omega$, as shown in the figure. The least count of the scale used in the meter bridge is $1 \ mm$. The unknown resistance is:View Solution
- 7A Copper $(Cu)$ rod of length $25\, {cm}$ and cross- sectional area $3\, {mm}^{2}$ is joined with a similar Aluminium $(Al)$ rod as shown in figure. Find the resistance of the combination between the ends $A$ and $B$ (in ${m} \Omega$)View Solution
(Take Resistivity of Copper $=1.7 \times 10^{-8}\, \Omega \,{m}$, Resistivity of Aluminium $=2.6 \times 10^{-8}\, \Omega \,{m}$ )
- 8View SolutionTwo heater wires of equal length are first connected in series and then in parallel. The ratio of heat produced in the two cases is
- 9In the following circuit if $V_A -V_B = 6\,V$ then the value of resistance $R$ (in $ohm$) is ............... $\Omega$View Solution
- 10View SolutionAssertion : Long distance power transmission is done at high voltage.
Reason : At high voltage supply power losses are less.