Self Studies

Electricity Test - 9

Result Self Studies

Electricity Test - 9
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0

    The electric current flowing through a body raises its temperature. This effect is called ______

    Solution

    A part of the source energy in maintaining the current may be consumed into useful work (like in rotating the blades of an electric fan). Rest of the source energy may be expended in heat to raise the temperature of the gadget. This effect is called the heating effect of electric current. 

  • Question 2
    1 / -0

    The heat produced in the source is given by ______

    Solution

    According to joule’s law of heating, the heat produced in the source is given by

    H = VIt

  • Question 3
    1 / -0

    Which of the following is a unit of power?

    Solution

    The SI unit of electric power is watt (W). It is the power consumed by a device that carries 1 A of current when operated at a potential difference of 1 V.

    Thus, 1 W = 1 volt × 1 ampere = 1 V A

  • Question 4
    1 / -0

    Which of the following is the formula for heat produced in a wire if the current flowing through the wire is I, a potential difference is V for time t?

    Solution

    For a steady current, I, the amount of heat H produced in time t is H = VIt.

  • Question 5
    1 / -0

    Electric bulb uses which effect for producing light?

    Solution

    The electric heating is also used to produce light, as in an electric bulb. Here, the filament must retain as much of the heat generated as is possible, so that it gets very hot and emits light. 

  • Question 6
    1 / -0

    The unit of electric energy is ______

    Solution

    Since electrical energy is the product of power and time, the unit of electric energy is, therefore, watt hour (W h).

  • Question 7
    1 / -0

    An electric bulb is connected to a 220 V generator. The current is 1 A. What is the power of the bulb?

    Solution

    Electric power = VI

    V = 220V and I = 1A

    Therefore,

    Electric power = 220 × 1 = 220 W

Self Studies
User
Question Analysis
  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now