Question

If 4 resistances each of value 1 Ohm are connected in series, What will be the resultant resistance?
(class 10 CBSE SAMPLE PAPER 2017-18 SCIENCE)

Answer 1

SOLUTION:
Given:

Four resistances each of 1 ohm connected in series.
Let the four resistances  be R1, R2, R3 ,R4 connected in series then their resultant resistance R:

R= R1 + R2+ R3+R4

R1= 1Ω, R2= 1Ω, R3= 1Ω, R4=1Ω(Given)

Resultant resistance (R)= 1+1+1+1
R= 4Ω
Hence, the resultant resistance is equal to 4 ohms.

HOPE THIS WILL HELP YOU....

Answer 2

When it is said its is connected in series then
Total resistance(R) = r1 + r2 + r3 + r4
= (1+1+1+1)ohm
= 4ohm