Questions tagged 'Heating Effect of Current'

• One kilowatt hour is equal to
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• If ${R_1}$ and ${R_2}$ are respectively the filament resistances of a 200 watt bulb and 100 watt bulb designed to operate on the same voltage, then
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• Two electric bulbs, one of 200 volt 40 watt and the other 200 volt 100 watt are connected in a house wiring circuit
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• The two bulbs as in the above question are connected in series to a 200 volt line. Then
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• The material of fuse wire should have
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• Two electric bulbs whose resistances are in the ratio of $1 : 2$ are connected in parallel to a constant voltage source. The powers dissipated in them have the ratio
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• A heater coil is cut into two parts of equal length and one of them is used in the heater. The ratio of the heat produced by this half coil to that by the original coil is
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• Resistance of one carbon filament and one tungsten lamp are measured individually when the lamp are lit and compared with their respective resistances when cold. Which one of the following statements will be true
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power
• The mechanism of the heat produced in a conductor when an electric current flows through it, can be explained on the basis of
  Category: Current Electricity | Tags: Heating Effect of Current, Electric Power

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