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प्रश्न
Match the following:
| 1. | Electricity and magnetism | a. | Step-down transformer |
| 2. | Force on the conductor | b. | Hans Christian Oersted |
| 3. | Electric bell | c. | I LB |
| 4. | Ns <Np | d. | Electromagnet |
जोड़ियाँ मिलाइएँ
उत्तर
| 1. | Electricity and magnetism | b. | Hans Christian Oersted |
| 2. | Force on the conductor | c. | I LB |
| 3. | Electric bell | d. | Electromagnet |
| 4. | Ns <Np | a. | Step-down transformer |
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