Question

48. Derive an expression for equivalent resistance of
resistors connected in series.​

Answer 1

Answer:

equivalent resistance=sum of resistors connected (in series)

Explanation:

In series combination

the same current passes through each resistor and voltage differs

let three resistors are connected in series,

R1,R2 and R3

I is constant

for R1 V1 is

V1=IR1. =>eq1

for R2 V2 is

V2=IR2. =>eq2

for R3 V3 is

V3=IR3. =>eq3

V=V1+V2+V3

IR=I(R1+R2+R3)

R=R1+R2+R3

R=R1+R2+R3+.............+Rn

Answer 2

Answer in attachment: