WBCS.LIVE practice question
Combine three resistors 5Ω, 4.5Ω and 3Ω in such a way that the total resistance of this combination is maximum with value
Solve this multiple-choice question and check the correct answer with its explanation below.
Answer options
Correct answer and explanation
Correct answer: 12.5Ω
Explanation: When connected in series, resistors add directly, giving the maximum resistance = 5Ω + 4.5Ω + 3Ω = 12.5Ω. 📚 Other Information: ▪️ In series, total resistance = R₁ + R₂ + R₃. ▪️ In parallel, total resistance is less than the smallest resistor. ▪️ Here, series gives maximum resistance (12.5Ω). ▪️ Parallel connection would give minimum resistance (~1.5Ω). ▪️ Resistors regulate current in electrical circuits. ▪️ Series resistors are used for voltage division. ▪️ Parallel resistors are used for current division. ▪️ This principle is widely applied in household wiring and electronics.