What will be equivalent resistance of circuit between $x$ and $y$
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The $V-i$ graph for a conductor makes an angle $\theta $ with $V-$ axis. Here $ V$ denotes the voltage and $i$ denotes current. The resistance of conductor is given by
When current supplied by a cell to a circuit is $0.3 \,A$, its terminal potential difference is $0.9 \,V$. When the current supplied becomes $0.25 \,A$, its terminal potential difference becomes $1.0 \,V$. The internal resistance of the cell is ............ $\Omega$
Incandescent bulbs are designed by keeping in mind that the resistance of their filament increases with the increase in temperature. If at room temperature, $100 \mathrm{~W}, 60 \mathrm{~W}$ and $40 \mathrm{~W}$ bulbs have filament resistances $\mathrm{R}_{100}, \mathrm{R}_{60}$ and $\mathrm{R}_{40}$, respectively, the relation between these resistances is
A metal wire of resistance $3\,\Omega $ is elongated to make a uniform wire of double its previous length. The new wire is now bent and the ends joined to make a circle. If two points on this circle make an angle $60^o$ at the centre, the equivalent resistance between these two points will be
A wire has a resistance of $6 \,\Omega$. It is cut into two parts and both half values are connected in parallel. The new resistance is ................ $\Omega$
When two resistance are connected in parallel then the equivalent resistance is $\frac {6}{5}\Omega $ . When one of the resistance is removed then the effective resistance is $2\, \Omega $. The resistance of the wire removed will be ................ $\Omega$