A toaster produces more heat than a light bulb when they are connected in parallel. Which has the greater resistance.

A toaster produces more heat than a light bulb, when connected in parallel across a source of e.m.f. Which has greater resistace and why?

State Ohm’s law. Derive the laws of resistance, when they are connected in parallel.

A wire has a resistance of 90 Omega and it is cut into three pieces having equal lengths. If these are now connected in parallel, find the resistance of the combination so formed.

A set of n identical resistors, each of resistance R Omega, when connected in series have an effective resistance X Omega and when the resistors are connected in parallel, their effective resistance is Y Omega. Find the relation between R, X and Y.

A galvanometer, together with an unknown resistance in series, is connected across two identical batteries of each 1.5 V. When the batteries are connected in series,the galvanometer records a current of 1 A, and when the batteries are connected in parallel, the current is 0.6 A. In this case, the internal resistance of the battery

n conductors, each of resistance r, when connected in parallel, give an effetive resistance R. What will be resistance, if they are connected in series?