In the given figure, the equivalent resistance between the points $A$ and $B$ is ............ $\Omega$
AIIMS 1999, Easy
Download our app for free and get started
(b) ${R_{AB}} = {R_1} + \frac{{{R_2}{R_3}}}{{{R_2} + {R_3}}} + {R_4}= 2 + \frac{{4 \times 4}}{{4 + 4}} + 2 = 6\,\Omega $.
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
- 1By error, a student places moving-coil voltmeter $V$ (nearly ideal) in series with the resistance in a circuit in order to read the current, as shown. The voltmeter reading will be ............ $V$View Solution
- 2A $10\,V$ battery with internal resistance $1\,\Omega $ and a $15\,V$ battery with internal resistance $0.6\,\Omega $ are connected in parallel to a voltmeter (see figure). The reading in the voltmeter will be close to ................ $V$View Solution
- 3As the switch $S$ is closed in the circuit shown in figure, current passing through it is ................ $\mathrm{A}$View Solution
- 4Resistance of rod is calculated by measuring its length with help of meter scale of least count $1\ mm$ . Its radius is measured with help of screw gauge having $50$ division on circular scale and pitch is of $1\ mm$ . Resistivity of material is exact. Length of the wire is found to be $20\ cm$ and diameter of wire is $4\ mm$ . Find the percentage error in calculation of resistance ............... $\%$View Solution
- 5View SolutionTwo wires of the same material are given. The first wire is twice as long as the second and has twice the diameter of the second. The resistance of the first will be
- 6In the circuit shown below, the resistances are given (in $\Omega$ ) and the battery is assumed ideal with emf equal to $3.0 \,V$. The resistor that dissipates the most power isView Solution
- 7A $2\, W$ carbon resistor is color coded with green, black, red and brown respectively. The maximum current which can be passed through this resistor is .............. $mA$View Solution
- 8A $50\,V$ battery is connected across a $10\, ohm$ resistor. The current is $4.5\, amperes$. The internal resistance of the battery is ............. $ohm$View Solution
- 9Two batteries of $e.m.f.$ $4\,V$ and $8 \,V$ with internal resistances $1\, \Omega$ and $2\,\Omega$ are connected in a circuit with a resistance of $9 \,\Omega$ as shown in figure. The current and potential difference between the points $P$ and $Q$ areView Solution
- 10The potential difference between point $A$ and $B$ is ............. $V$View Solution
