91. Keeping the voltage constant, if more lamps are connected one by one in a series circuit, the over all current in the circuit:
92. Which of the following metals is used for the manufacture of heating elements provided in electric iron?
93. To maintain the current in a given electrical circuit, the cell has to spend . . . . . . . . energy stored in it.
94. A current of 0.5 A flows through the resistor in the circuit and have a voltage source with 6 V. The power supplied to the resistance by the source will be . . . . . . . .
95. Consider the following statements.
An ordinary light bulb has a rather short life because the
1. Filament wire is not uniform.
2. Bulb cannot be evacuated completely.
3. Wires supporting the filament melt at high temperatures.
Which of the above statements are correct?
An ordinary light bulb has a rather short life because the
1. Filament wire is not uniform.
2. Bulb cannot be evacuated completely.
3. Wires supporting the filament melt at high temperatures.
Which of the above statements are correct?
96. The potential difference is 40V. Find the work done in moving a charge of 0.5 C?
97. A transformer
98. . . . . . . . . through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface.
99. What is the term of the space around a magnet where its influence can be detected?
100. The potentiometer is superior to a voltmeter for measuring a potential difference because
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