91. The given symbol stands for a/an . . . . . . . . in an electric circuit.
92. Which of the following forces is not electromagnetic in nature?
93. When two conductors carrying current in the same direction-
94. The energy consumption of a typical household in a month is 9 × 108J. What will be its energy in units?
95. When the current drawn from the main wire is greater than 20A, due to overheating can cause of fire. What is this called?
96. A device which converts electrical energy into mechanical energy is
97. Consider the following statements.
1. Magnetic lines of force are closed curves while electric lines are not.
2. Electric lines of force are closed curves while magnetic lines are not.
3. Both electric and magnetic lines of force are closed curves.
Which of statement(s) given above is/are correct?
1. Magnetic lines of force are closed curves while electric lines are not.
2. Electric lines of force are closed curves while magnetic lines are not.
3. Both electric and magnetic lines of force are closed curves.
Which of statement(s) given above is/are correct?
98. A choke coil has
99. While moving from one end to another end inside a solenoid, its magnetic field . . . . . . . .
100. If the resistance of the conductor is doubled then the electric current is halved. What causes this:
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