A $5\, V$ battery with internal resistance $2\, \Omega$ and a $2\,V$ battery internal resistance $1\, \Omega$ are connected to a $10\, \Omega$ resistor as shown in the figure. The current in the $10\, \Omega$ resistor is :-
Medium
Download our app for free and get started
$\mathrm{E}_{\mathrm{eq}}=\left(\frac{\frac{5}{2}-\frac{2}{1}}{\frac{1}{2}+1}\right) \mathrm{V}^{\mathrm{r}_{\mathrm{eq}}}=\frac{2 \times 1}{2+1}=\frac{2}{3}\, \Omega$
$\mathrm{i}=\frac{\mathrm{E}_{\mathrm{eq}}}{10+\mathrm{r}_{\mathrm{eq}}}=0.03 \mathrm{\,A}$ from $\mathrm{P}_{2}$ to $ \mathrm{P}_{1}$
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 length of a wire of a potentiometer is $100\, cm$, and the $emf$ of its standard cell is $E\,volt$. It is employed to measure the $e.m.f$ of a battery whose internal resistance is $0.5 \,\Omega$. If the balance point is obtained at $l = 30\, cm$ from the positive end, the $e.m.f.$ of the battery isView Solution
where $i$ is the current in the potentiometer
- 2View SolutionIn potentiometer a balance point is obtained, when
- 3The reading of the ideal voltmeter in the adjoining diagram will be ................. $V$View Solution
- 4A square shaped wire with resistance of each side $3\, \Omega$ is bent to form a complete circle. The resistance between two diametrically opposite points of the circle in unit of $\Omega$ will be ......View Solution
- 5A heater draws a current of $2\,A$ when connected to a $250\,V$ source. The rate of energy dissipation is ............. $W$View Solution
- 6Find current through the branch $ad$ of the circuit shown in figure. :-............. $A$View Solution
- 7In the circuit shown in Figure the ammeter reads a current ............. $A$View Solution
- 8An electric iron draws $5\, amp$, a $TV$ set draws $3\, amp$ and refrigerator draws $2\, amp$ from a $220\, volt$ main line. The three appliances are connected in parallel. If all the three are operating at the same time, the fuse used may be of ............. $amp$View Solution
- 9In a region $10^{19}$ $\alpha -$ particels and $10^{19}$ protons per second move to the left, while $10^{19}$ electrons moves to the right per second. The current isView Solution
- 10A cylindrical copper rod has length $L$ and resistance $R$. If it is melted and formed into another rod of length $2 L$, then the resistance will be ....... $R$View Solution