Question Detail
Question
Three resistors (2 Ohms, 4 Ohms, 5 Ohms) are connected in parallel with a potential difference of 20V maintained across them. Find the total current.
Correct Answer
Option D is the correct answer.
Detailed Explanation
When resistors are connected in parallel, the potential difference (voltage) across each resistor is the same. The total current is the sum of the currents through each resistor.Given: V = 20 V, R1 = 2 Ω, R2 = 4 Ω, R3 = 5 Ω.Current through R1 (I1) = V / R1 = 20 V / 2 Ω = 10 ACurrent through R2 (I2) = V / R2 = 20 V / 4 Ω = 5 ACurrent through R3 (I3) = V / R3 = 20 V / 5 Ω = 4 ATotal current (Itotal) = I1 + I2 + I3 = 10 A + 5 A + 4 A = 19 A.
Hint
For parallel circuits, voltage is constant across components, and currents add up. Use Ohm's Law for each resistor.