Question

Write the formule for equivalent Resistance
when three reststance connected in series.


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Answer 1

Let, there resistance is R1,R2&R3

(A)

in series combination current I is same in all three resistance but , potential difference is vary in all three resistance but total potential difference is V .

Applying ohm's law

→ V = IR. ....(1)

Now, applying ohm's law in all three resistance

→ V1 = IR1

→ V2 = IR2

→ V3 = IR3

from equation (1)

IR = V

=> IR = IR1 + IR2 + IR3

=> IR = I ( R1+R2+R3)

=> R = R1+R2+R3.

Hope it helps u☺☺

Answer 2

Answer:

Equivalent Resistance = R1 + R2 + R3

Explanation:

In series connection , the value of current is same in all resistors but resistance divides

So we must add all individual resistance which gives individual resistance