Quiz 6

• Consider three identical electric bulbs of power P rated for voltage V. Two of bulbs are

  connected in parallel and the third one in series to the parallel combination. The total power dissipated in this circuit, when it is connected to battery of voltage V is:

  2P/3
• Four identical electric bulbs are connected in series and then to a battery. The fifth identical bulb is conncected in parallel to the line of first four bulbs. The additional connection will:

  Leave the illumination produced in series unchanged
• Electric bulb A is rated for power 40W, 110 V; electric bulb B is rated for power 100W,

  110 V. These bulbs are connected in series and this series combination is plugged into

  outlet of 110 V. What bulb is brighter?

  Bulb A because it dissipates more power
• Resistors 2 and 3 are in series after 1, but parallel to each other. Only resistor 3 is after a switch. Voltage delivered is ideal to all. The potential difference on resistor #2 before closing the switch was…

  V/2
• Resistors 2 and 3 are in series after 1, but parallel to each other. Only resistor 3 is after a switch. Voltage delivered is ideal to all. The potential difference on resistor #2 after closing the switch is…


  V/3