Two resistances $r_1$ and $r_2\left(r_1 < r_2\right)$ are joined in parallel. The equivalent resistance $R$ is such that
Easy
Download our app for free and get started
(d)
In parallel the equivalent resistance is less than both the resistances.
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 wire of length $5\,m$ and radius $1\,mm$ has a resistance of $1\, ohm$. What length of the wire of the same material at the same temperature and of radius $2\,mm$ will also have a resistance of $1\, ohm$ .............. $m$View Solution
- 2The resistances of the four arms $P, Q, R$ and $S$ in a Wheatstone's bridge are $10\,ohm$, $30\,ohm$, $30\,ohm$ and $90\,ohm$, respectively. The e.m.f. and internal resistance of the cell are $7\,volt$ and $5\,ohm$ respectively. If the galvanometer resistance is $50\,ohm$, the current drawn from the cell will be ............... $A$View Solution
- 3In the circuit, given in the figure currents in different branches and value of one resistor are shown. Then potential at point $B$ with respect to the point $A$ is$.......V$View Solution
- 4By 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
- 5View SolutionAcross a metallic conductor of non-uniform cross section a constant potential difference is applied. The quantity which remains constant along the conductor is
- 6Ten $60 \,W , 220 \,V$ bulbs are connected in series to $220 \,V$ supply. Power consumed in the circuit is ......... $W$View Solution
- 7In india electricity is supplied for domestic use at $220\,\,V$. It is supplied at $110\,\, V$ in $USA$. If resistance of $60\,\, W$ bulb for use in India is $R$, then the resistance of $60\,\, W$ bulb for use in $USA$ will beView Solution
- 8The resistance of a conductor is $5\, ohm$ at $50\,^oC$ and $6\, ohm$ at $100\,^oC$. Its resistance at $0\,^oC$ is ................ $ohm$View Solution
- 9When the resistance $R$ (indicated in the figure below) is changed from $1 \,k \Omega$. to $10 \,k \Omega$, the current flowing through the resistance $R'$ does not change. What is the value of the resistor $R'?$View Solution
- 10View SolutionThe material of fuse wire should have