(i) Ip = (VsIs)/Vp = (12×5)/240 = 0.25A. (ii) Power input = VpIp = 240×0.25 = 60W. (iii) Power output = VsIs = 12×5 = 60W. (b) Step-up transformer has more turns on the secondary. (c)(i) Soft iron is easily magnetized and demagnetized. (ii) Copper is a good conductor. (d) By laminating the core.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Joseph Soko – 101 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS