Jack tried to place magnets on his refrigerator at home but they won't stick. what could be the reason

Act has a 1200: 5 or 240: 1 turns ratio. it is short circuited. what is the maximum current at 1200a primary if we put a 100ohm resistor across the secondary end of the ct. use it as current source circuit.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

How is the acceleration of an object in uniform circular motion constant? a - in magnitude only b - in direction only c - in both magnitude and direction d - in magnitude, direction & orientation