Question
A current-carrying conductor placed in a magnetic field
experiences a force because:Solution
When a conductor carries current, it means that charges (typically electrons) are in motion inside the conductor. A magnetic field exerts a force on these moving charges , not on stationary ones. This force is given by the Lorentz force law : 
This interaction causes the entire conductor to experience a mechanical force when placed in a magnetic field.
The study of the inheritance of traits in humans is called
A body of mass 2 kg is moving in SHM with angular frequency 4 rad/s and amplitude 0.1 m. Max kinetic energy is:
What is the formula for calculating speed?
Which disease is caused by a virus?
A satellite moving around Earth in a circular orbit has constant:
Which of the following is not a characteristic of prokaryotic cells?
Which among the following is produced using ‘Haber Process’?
A person rings a metallic bell near a strong concrete wall. He hears the echo after 0.3 s. if the sound moves with a speed of 340 m/s, how far is the wa...
When body is accelerated:
A concave lens always forms an image which is –
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