Two 4 ohm resistors are connected in series. Find the total resistance — Physics problems | PhysLabo
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Resistance of a series connection

Easy 10 grade Electricity / Electric Current
Problem statement

Two resistors of resistance $R_1 = 4$ ohm and $R_2 = 4$ ohm are connected in series. Find the total resistance of the combination.

Given
  • $R_1 = 4$ ohm
  • $R_2 = 4$ ohm
  • $R = ?$
Hints
Hint 1 / 2
In a series connection the current passes through all resistors one after another.
Hint 2 / 2
The total resistance is the sum of the resistances.
Solution

In a series connection the resistances add up:

$$R = R_1 + R_2 = 4 + 4 = 8 \text{ ohm}$$

Answer

$R = 8$ ohm

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