Name four appliances wherein an electric motor,a rotating device that converts electrical energy to mechanical energy,is used as an important component. In what respect are motors different from generators?

State the rule to determine the direction of: $(i)$ a magnetic field produced around a straight current-carrying conductor,$(ii)$ force experienced by a current-carrying straight conductor placed in a magnetic field perpendicular to it,and $(iii)$ current induced in a coil due to its rotation in a magnetic field.

$(a)$ Which effect of the electric current is utilised in the working of an electrical fuse?
$(b)$ Is a fuse connected in series or in parallel in a household circuit?
$(c)$ Draw a schematic labelled diagram of a domestic circuit which has a provision of a main fuse,meter,one light bulb,and a switch socket.

Draw a labelled circuit diagram of a simple electric motor and explain its working. In what way are these simple electric motors different from commercial motors?

The induced electromotive force $(EMF)$ in a conducting coil does not depend on which of the following?

Describe the working of an $AC$ generator with the help of a labelled circuit diagram. What changes must be made in the arrangement to convert it to a $DC$ generator?