A battery of internal resistance $4\, ohm$ is connected to the network of resistance as hown. In the order that the maximum power can be delivered to the network, the value of $R$ in ohm should be :-
$4/9$
$2$
$8/3$
$18$
A wire is connected to a battery between the point $M$ and $N$ as shown in the figure $(1)$. The same wire is bent in the form of a square and then connected to the battery between the points $M$ and $N$ as shown in the figure $(2)$. Which of the following quantities increases?
If power in $3\,\Omega $ is $27\,W$ then what is the power in $2\,\Omega $ ................. $W$
How many $60 \,W$ bulbs may be safely run on $220 \,V$ using a $5 \,A$ fuse is .........
The amount of heat produced in a resistor when a current is passed through it can be found using
You are given three bulbs of $25$, $40$ and $60\, watt$. Which of them has lowest resistance