Physics
The purpose of an electric meter in a house is:
- to give the cost of electricity directly
- to give the consumption of electrical energy
- to safeguard the circuit from electrical short circuit
- to put on or off the mains.
Household Circuits
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Answer
to give the consumption of electrical energy
Reason — An electric meter measures the amount of electrical energy consumed in that house over a given period of time.
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Fill in the blanks:
(a) The unit in which we pay the cost of electricity is …………… .
(b) The electrical energy consumed in a house is measured by …………… .
(c) In a household electrical circuit, the appliances are connected in …………… with the mains.
(d) A switch is connected to the …………… wire.
(e) The insulated wire in red color in a cable is the …………… wire.
(f) One kilowatt hour is equal to …………… joule.
(g) A fuse wire should have low …………… .