Question

Total resistance of the registers having 15 ohm each which are connected in series is
A. 40ohm B.50ohm C.60ohm D.100ohm

Answer 1

Answer:

60ohm

Explanation:

As the resistors are connected in series, the equivalent resistance will be always a multiple of 15. So, the total resistance is 60ohm.

Answer 2

Complete Question:

• Total resistance of the four resistors having 15 ohm each which are connected in series is

A. 40ohm B.50ohm C.60ohm D.100ohm

Calculation:

We know that in series combination of resistances, the net resistance will be equal to algebraic addition of the individual resistances.

$R_{eq} = R1 + R2 + R3 + R4$

$\implies R_{eq} = 15 + 15 + 15 + 15$

$\implies R_{eq} = 60 \: ohm$

So, total resistance of circuit is 60 ohm.

• Also, the net resistance for series combination of similar resistances is MULTIPLES OF INDIVIDUAL VALUES, so the only option that matches is 60 ohm.

Option C) is correct