Questions asked by rajdeep d.

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• What is the total force on any arbitrary current carrying wire in a uniform magnetic field ?
  
• What is the total force on any arbitrary current carrying loop in a uniform magnetic field ? Prove your answer
  
• A ripple is created in water. The amplitude at a distance of 5 cm from the point where the sound ripple was created is 4 cm. Ignoring damping, what will be the amplitude at the distance of 10 cm ?
  
• Calculate activity of a radioactive substance after 3 hours ?