Two wires with resistances $R$ and $2R$ are connected in parallel, the ratio of heat generated in $2R$ and $R$ is
Easy
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
- 1View SolutionA wire of a certain material is stretched slowly by ten percent. Its new resistance and specific resistance become respectively
- 2A dry cell has an $e.m.f.$ of $1.5\, V$ and an internal resistance of $0.05\,\Omega $. The maximum current obtainable from this cell for a very short time interval is ................... $A$View Solution
- 3A primary cell has an $e.m.f.$ of $1.5\,volts$, when short-circuited it gives a current of $3$ amperes. The internal resistance of the cell is .............. $ohm$View Solution
- 4In the adjoining circuit, the battery $E_1$ has an $e.m.f.$ of $12\, volts$ and zero internal resistance, while the battery $E_2$ has an $e.m.f.$ of $2\, volts$. If the galvanometer $G$ reads zero, then the value of the resistance $X$ in $ohms$ isView Solution
- 5In 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
- 6Five 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 ........... $r$View Solution
- 7A potential difference of $10 \,V$ is applied across a conductor of $1000 \,\Omega$. The number of electrons flowing through the conductor in $300 \,s$ is ..........View Solution
- 8In the circuit, the potential difference across $PQ$ will be nearest to .............. $V$View Solution
- 9The figure shows a network of four resistances and three batteries The current through the branch $CF$ is ............... $A$View Solution
- 10Resistors of $1$, $2$, $ohm$ are connected in the form of a triangle. If a $1.5\, volt$ cell of negligible internal resistance is connected across $3\, ohm$ resistor, the current flowing through this resistance will be ................ $amp$View Solution