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38.a short bar magnet oscillates in VMM with a frequency of 10Hz. if a downward current of 15A is established in a long thin vertical wire placed 20cm west of the magnet its frequency was found to be 5Hz. if a TG containing 500 turns with a radius of each turn 4pi cm is used at that place and a current of 10mA is allowed to pass through it. find the deflection of magnetic needle in the TG |
| Answer» 38.a short bar magnet oscillates in VMM with a frequency of 10Hz. if a downward current of 15A is established in a long thin vertical wire placed 20cm west of the magnet its frequency was found to be 5Hz. if a TG containing 500 turns with a radius of each turn 4pi cm is used at that place and a current of 10mA is allowed to pass through it. find the deflection of magnetic needle in the TG | |