8/19/2019 Introduction Ex4

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An electric current is composed of components through which electric charges may flow. Such

components include resistors and capacitors, each not taking into account the circuits with a constant

magnitude or steady currents. A type of electric circuit that holds the component that serves as a reservoir 

of energy in a current – carrying circuit is called a DC or direct current circuit (Stanford & anner, !"#$%.

Charges in this circuit moves through constantly in the same sense through time as long as the necessary

components, emf (electromotive force% and resistors, are steadily present (erner, #''%. heelectromotive force is not actually a force )ut is a potential difference or voltage developed )y any source

of electrical energy. As detailed )y Stanford and anner, an emf possesses two physical characteristics

that define its role in an electric circuit. *irst it maintains a constant potential difference across itself and

it also deposits energy +ust like a reservoir in a circuit.

 esistor – containing circuits such as the DC circuit have different possi)le arrangements.

Connected resistances in series have a total potential difference that is e-uivalent to the summation of the

resulting potential differences of the individual resistances involved. n the contrary, the applied potential

difference across the com)ination of resistances in parallel is +ust similar to the resulting potential

difference across the each resistances (/alliday, esnick and 0alker, #''$%. 1eanwhile, series – parallel

circuits consist )oth series and parallel elements consisting of at least three resistors and depend on the

effective resistance of the parallel portion and on the other resistances (Spellman, !"#2%.

he o)+ective of the e3periment is to differentiate how voltages and currents are distri)uted in the

resistor circuits according to hm4s law connected in series, parallel and series – parallel.

eferences5

/alliday, D., esnick ., & 0alker 6. (#''$%. *undamentals of 7hysics, *ourth 8dition. 9ew Delhi5 6ohn

0iley & Sons, p. '$, ''.

erner, .S. (#''%. 7hysics for Scientists and 8ngineers, :olume !. 1assachusetts, ;SA5 6ones &