Question 1 What is a compass? Question 2 Describe the construction of a compass? Question 3 State two properties of magnets? Question 4 State few uses of magnetic compass? Question 5 Why a freely suspended magnet (or a freely pivoted magnet) always points in the same direction? Question 6 You are given a bar magnet whose N and S poles are not marked? … [Read more...] about Properties of Magnet
compass
Detection of weak current flowing through liquid
Question 1 Write the full form of LED? Question 2 Name a device which glows even when a weak electric current passes through it? Question 3 What is it advantage of using LED in testing the electrical conductivity of liquids? Question 4 Which effect of electric current is utilised for detecting the flow of current through a solution: (a) When a torch bulb is … [Read more...] about Detection of weak current flowing through liquid