Question

(a) Define electromagnetic induction.
(b)
(c)
State two advantages of chromium plating.
Name and (briefly) explain the method used to obtain pure copper from
5
impure copper.​

Answer 1

• Electromagnetic Induction is the process of using magnetic fields to produce voltage, and in a closed circuit, a current. So how much voltage (emf) can be induced into the coil using just magnetism.

• Chrome plating increases the hardness, durability, and corrosion resistance of a surface, while also creating a shiny and smooth surface that is easier to clean. For improved wear and corrosion resistance, it's tough to beat hard chrome plating.

• Copper is purified by electrolysis . Electricity is passed through solutions containing copper compounds, such as copper(II) sulfate. The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper.

Hope it helps you dear ✌