Unit :11 Electricity
1).Who discovered the magnetic effect of electric current?i. Flemingii. Daltoniii. Oerstediv. FaradayAns: iii. Oersted 2).Which instrument changes lower a. c. voltage into higher a. c. voltage and vice- versa?i. Transformerii. Dynamoiii. Inverteriv. AdaptorAns: i. Transformer 3). Which instrument provides electricity in a large scale but causes pollution?i. Hydroelectric power plantii. Thermal power plantiii. Wind power…
