Question

A meter stick of mass 20kg is pivoted at one end and the other end is displacro
through 60' from the vertical. The increase in its P.E. is
a) 4.9)
b) 9.6)
98J
d) 49)​

Answer 1

Answer:

rectangular loop ABCD is placed near on infinite length current carrying wire. Magnetic force on the

loop is :

A

B

25A

15A

10cm

D

5cm

25cm

(source)

(1) 1.25 x 104N, Attraction

(2) 1.25 x 104N, Repulsion

(3) 12.5 x 104 N, Repulsion

(4) 12.5 x 104N Attraction