For an electric circuit given below, the correct combination of voltage (V) and current (I) is
V = 900 V; I = 18 A
V = 300 V; I = 5.5 A
V = 600 V; I = 1 A
V = 300 V; I = 2 A
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC NDA-2 – 2024
– For a complete circuit with a voltage source and an equivalent resistance R_eq, the total voltage V supplied by the source is related to the total current I flowing out of the source by V = I * R_eq.
– The question provides possible pairs of total voltage (V) and total current (I) for an electric circuit. We can calculate the implied equivalent resistance (R_eq = V/I) for each pair:
– A) V = 900 V, I = 18 A => R_eq = 900/18 = 50 Ω
– B) V = 300 V, I = 5.5 A => R_eq = 300/5.5 ≈ 54.55 Ω
– C) V = 600 V, I = 1 A => R_eq = 600/1 = 600 Ω
– D) V = 300 V, I = 2 A => R_eq = 300/2 = 150 Ω
– The circuit diagram would define the value of R_eq based on the configuration and values of its components (resistors, etc.). Without the diagram, we must assume that one of these calculated R_eq values corresponds to the actual circuit’s equivalent resistance. Assuming option D is correct, the circuit must have an equivalent resistance of 150 Ω when connected to a 300 V source or when a 2 A current flows through it resulting in a 300 V drop.