Primary coil of a transformer is connected to 220 V ac. Primary and secondary turns of the transforms are 100 and 10 respectively. Secondary coil of transformer is connected to two series resistance shown in shown in figure. The output voltage (V₀) is :

Question

G1 Physics · Accepted Answer

Image For the transformer: V₁/V₂ = N₁/N₂ 220/V₂ = 100/10 V₂ = 22 V The two resistors are 15 kΩ and 7 kΩ in series. Total resistance = 22 kΩ Current, I = 22/(22 × 10³) = 1 mA Output voltage across 7 kΩ resistor: V₀ = I × 7 kΩ = 1 mA × 7 kΩ = 7 V