Five cells each of emf $E$ and internal resistance $r$ are connected in series. Due to oversight one cell is connected wrongly. The equivalent internal resistance of the combination is ........... $r$
Easy
Download our app for free and get started
(c)
All the internal resistances will be still in series, there will be no impact of polarity on the equivalent resistance.
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 cells are ideal and of equal emfs, the capacitance of the capacitor is $C$ and the resistance of the resistor is $R. X$ is first joined to $Y$ and then to $Z$. After a long time, the total heat produced in the resistor will beView Solution
- 2The supply voltage to room is $120\ V$. The resistance of the lead wires is $6\,\Omega$ . A $60\ W$ bulb is already switched on. What is the decrease of voltage across the bulb, when a $240\ W$ heater is switched on in parallel to the bulb? ............. $V$View Solution
- 3When a current of $2\, A$ flows in a battery from negative to positive terminal, the potential difference across it is $12\, V$. If a current of $3\, A$ flows in the opposite direction potential difference across the terminals of the battery is $15\, V$, the $emf$ of the battery is ............... $\mathrm{V}$View Solution
- 4Find potential at point $C$ and $D$View Solution
- 5The current flowing in the given circuit is $0.1\,A$ . The potential difference between the points $X$ and $Y$ is ................ $\mathrm{V}$View Solution
- 6The ammeter reading in the following circuit will be .............. $A$View Solution
- 7The following circuit consist of a $5 \,\mu F$ capacitor, having charge $50 \,\mu C$ as shown. The switch is closed at $t=0$. The value of current in $2 \,M \Omega$ resistor at $t=0$ is ........... $\mu A$View Solution
- 8View SolutionIf an observer is moving with respect to a stationary electron, then he observes
- 9The equivalent resistance between points $A$ and $B$ in the given network is ............ $\Omega$View Solution
- 10The figure shows a tetrahedron, each side of which has a resistance $r$ Choose the correct diagram $(s),$ which show two-dimensional equivalent of the tetrahedron.View Solution
