How long does it take a light beam to cross a 6. m wide room? If the air were replaced with a transparent medium of index n, how much longer would it take?
What will be an ideal response?
Question 2
A coil of 160 turns and area 0.20 m2 is placed with its axis parallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 T in the negative x-direction in 2.0 s.
If the resistance of the coil is 16 , at what rate is power generated in the coil?