Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination?

Electrical appliances at home are normally earthed so that?

A generator is on daily use and in the process, ten 60 W and five 40 W tungsten bulbs are on for the same time interval. the energy consumed daily is?

Which of the following can conduct electricity owing to the presence of free mobile electrons?

Find the effective resistance in the diagram above