Acoil of wire 8.6 cm in diameter has 15 turns and carries a current of 2.7 a. the coil is placed in a magnetic field of 0.56 t. what is the magnitude of the maximum torque that can be applied to the coil by the magnetic field?

Explanation:

it is given that diameter = 8.6 cm

current =2.7 ampere

number of turns = 15

magnetic field =0.56 T

maximum torque= BINASINΘ  for maximum torque sinΘ=1

so maximum torque==0.56×2.7×0.005806×15=0.13174 Nm

it was a fall down when it happens

explanation:

A Carnot heat engine receives heat from a reservoir at 900$^\circ{}$C at a rate of 800 kJ/min and rejects the waste heat to the ambient air at 27$^\circ{}$C. The entire work output of the heat engine is used to drive a refrigerator that removes heat from the refrigerated space at -5$^\circ{}$C and transfers it to the same ambient air at 27$^\circ{}$C. Determine (a) the maximum rate of heat removal from the refrigerated space and (b) the total rate of heat rejection to the ambient air. Answers: (a) 4982 kJ/min, (b) 5782 kJ/min