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Current Electricity Test - 153
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Current Electricity Test - 153

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  • Question 1/10
    4 / -1
    A 10 ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts
    Solutions

  • Question 2/10
    4 / -1
    Two electric bulbs A and B are rated as 60 W and 100 W. They are connected in parallel to the same source. Then
    Solutions

  • Question 3/10
    4 / -1
    A piece of fuse wire melts when a current of 15 ampere flows through it. With this current, if it dissipates 22.5 W, the resistance of fuse wire will be
    Solutions

  • Question 4/10
    4 / -1
    Two wires \'A\' and ‘B\' of the same material have their lengths in the ratio 1 : 2 and radii in the ratio 2 : 1. The two wires are connected in parallel across a battery. The ratio of the heat produced in \'A\' to the heat produced in ‘B\' for the same time is
    Solutions

  • Question 5/10
    4 / -1
    A heater draws a current of 2A when connected to a 250 V source. The rate of energy dissipation is
    Solutions

  • Question 6/10
    4 / -1
    A bulb rated at (100 W - 200 V) is used on a 100V line. The current in the bulb is
    Solutions

  • Question 7/10
    4 / -1
    A current i passes through a wire of length l, radius of cross-section r and resistivity ρ. The rate of heat generation is
    Solutions

  • Question 8/10
    4 / -1
    Which of the following is not equal to watt?
  • Question 9/10
    4 / -1
    If three bulbs 60 W, 100 W and 200 W are connected in parallel, then
    Solutions

  • Question 10/10
    4 / -1
    If two wires having resistances R and 2 R both are joined in series and in parallel, then ratio of heat generated in this situation, applying the same voltage is
    Solutions

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