Which of the following statements is/are true about the principle of Van de Graaff generator ?
What is hydro energy? Explain the principle of genrating electricity from hydro energy. How much hydro electric power is generated in India?
State the principle of conservation of energy.
State the principle of 'gel electrophoresis' and mention two applications of this technique of biotechnology
State the energy changes that occur in an electric generator (or dynamo).
(a) State Fleming's left hand rule. (b) Write the principle of working of an electric motor. (c ) Explain the function of the following parts of an electric motor. (i) Armature , (ii) Brushes , (iii) Split ring
State whether the following statements are true or false. (a) An electric motor converts mechanical energy into electrical energy. (b) An electric generator works on the principle of electromagnetic induction. (c) The field at the center of a long circular coil carrying current will be parallel straight lines. (d) A wire with a green insulation is usually the live wire of an electric supply.
State Archimedes, principle.
NCERT ENGLISH-MAGNETIC EFFECTS OF ELECTRIC CURRENT SCIENCE-Solved Examples
