51) In electromagnetic spectrum visible light lies in between

52) Two heaters, rated 1000 Watts, 250 V each are connected in series across a 250 V, 50 Hz ac mains. What will be the total power drawn from the supply?

53) The rms value of a sinusoidal ac current is numerically equal to its value at an angle of _____ degrees

54) In a simple high pass RC filter, if the value of the capacitor is doubled, the cut off frequency is

55) The hypotenuse of a right angled triangle is 6 cm more than twice the shortest side. If the third side is 2 cm less than the hypotenuse, find the side of the triangle.