JEE Main 2025 Physics question

A galvanometer having a coil of resistance 30 need 20 mA of current for full-scale deflection. If a maximum current of 3 A is to be measured using this galvanometer, the resistance of the shunt to be added to the galvanometer should be , where X is

• (1)447
• (2)298
• (3)149Correct
• (4)596