What is the maximum resistance which can be made using five resistors each of $1/5\,\Omega $ ?
$0.2$
$1$
$5$
$10$
Of which physical quantity is the $joule/coulomb$ a unit?
Why alloys are used to make standard resistors ?
Two electric bulbs $A$ and $B$ are marked $220\, V, 60 \,W$ and $220\, V , 100\, W$ respectively. Which one of the two has greater resistance ?
Why is parallel arrangement used in domestic wiring?
State the factors on which the resistance of a cylindrical conductor depends, How will resistance of a conductor change if it is stretched so that its length is doubled ?