$(2)$ The product of a volt and an ampere is a joule/second.
$(3)$ The product of volt and watt is horse power.
$(4)$ Watt-hour can be measured in terms of electron volt.
State if

$(i)$ The equivalent e.m.f. is smaller than either of the two $e.m.f.$ is
$(ii)$ The equivalent internal resistance is smaller than either of the two internal resistances


