QNEET-2024-Ph-77: NEET 2024 Physics - Class 12 NEET-2024-Ph-77 Solution: In an ideal transformer the turns ratio is \( {N_S}{N_P} =…

An ideal transformer is a device that transfers electrical energy from one circuit to another through inductively coupled conductors�the transformer's coils. The primary coil (with N P turns) is connected to the input voltage ( V P ), and the secondary coil (with N S turns) delivers the output voltage ( V S ). The relationship between the input (primary) voltage and output (secondary) voltage in a transformer is determined by the ratio of the number of turns in the primary coil to the number of turns in the secondary coil, expressed by the formula: V S V P = N S N P In this case, the given turns ratio is N P N S = 1 2 . To find the correct expression for V S V P , we need to invert the given ratio to reflect the relationship with respect to the voltages. This means: N S N P = 2 Therefore, substituting into the voltage ratio equation: V S V P = 2 This indicates that the secondary voltage ( V S ) is twice the primary voltage ( V P ). If we were to express the ratio V S : V P based on this, it would be: Option B 2 : 1 This is the correct answer as it represents that, in accordance with the transformer's turns ratio, the voltage in the secondary coil is twice that in the primary coil.