Topics included in this app are: Safety Accessories Totally closed fuse Safety Precautions Electrons, protons Advantages & Disadvantages of A.C & D.C Types of electricity What is Electricity Troubles of lead acid battery Characteristic of lead acid cell Identification of full charge battery Difference between primary and Secondary cell Advantages & Disadvantages of A.C & D.C Cell and battery Chemical effect of electrical current Magnetic field in current caring conductor Ohms law and Kirchoff's