The three resistances are connected in series, their equivalent is equal to the addition of all the resistances. The unknown value of resistance is 1.74 ohm.
<h3>What is resistance?</h3>
The resistance is the opposition offered to the flow of current.
Given the value of resistance R₁ is 1 ohm, R₂ is 68 ohm and R₃ is R.
The total current flowing through the battery of voltage 24 V is 0.20 Amperes.
From the ohms law, The equivalent resistance is
= Voltage / Current
The equivalent resistance is
= R₁+ R₂+R₃
24 / 0.20 = 1+68+R
R = 1.74 ohm
The unknown value of resistance is 1.74 ohm.
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