91. Which of the following substances has very high resistance?
92. What is the starting voltage of an AA battery used for home gadgets such as remote controls, small toys and wireless kitchen appliances?
93. Alternate current is not preferable
94. Magnetism in materials is due to
95. Which equipment is used to transform mechanical energy into electrical energy?
96. What precaution should be taken to avoid the overloading of domestic electric circuits?
97. Modern electrical generator works on . . . . . . . . Principle
98. Which of the following scientists has given a law governing the force of attraction/repulsion between two charged particles?
99. What is the effective resistance (in Ω) of two resistors 20Ω and 30Ω connected in parallel?
100. Which of the following is a good conductor of heat but a bad conductor of electricity?
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