SSC CGL 2025 PYQ — Question 34

The correct answer is option 4 i.e. Electric Bell : Uses the magnetic effect of electric current.

The correctly matched pair is Electric Bell : Uses the magnetic effect of electric current.

An electric generator actually converts mechanical energy into electrical energy, not electrical energy into mechanical energy. Therefore, the first pair is incorrect. A transformer works only with alternating current (AC) to increase or decrease voltage; it does not operate on direct current (DC), so the second pair is also incorrect. An electromagnet is not a permanent magnet; it produces magnetism only when electric current flows through a coil, making the third pair wrong. An electric bell, however, works using the magnetic effect of electric current. When current passes through the coil, it becomes an electromagnet and attracts an iron armature, causing the bell to ring. Hence, the fourth pair is correctly matched.