a wire is bent into a plane to form a square of 30 cm side and a current of 100 A is passed through it. calculate the field strength set up at the centre of the square

Matter is needed to transfer thermal energy bya. conductionb. convectionc. radiation d. both a & b.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

Which best describes what forms in nuclear fission? a. two smaller, more stable nucleib. two larger, less stable nucleic. one smaller, less stable nucleusd. one larger, more stable nucleus