This is an arrangement of conductors for the purpose of transferring current. It may consist of a cell connected by a low resistance wire (e.g,Cu) to a resistor. The cell provides the e.m.f/pd which drives the current through the circuit component.
Note: (i)Current, measured in ampere (A)and represented by I.
(ii)Electromotive force (e.m.f.)and potential difference both measured in volts (V).
(iii)Resistance measured in ohms .
From the definition of current, we have; I=Q/t {Q=It}
Where I =current in ampere
Q=quantity of electric charge in coulomb
t=time in second.
OHM'S LAW
The law states that the current passing through a conductor is directly proportional to the potential diffent between its ends,provided the temperature remains constants.
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