In ____ unit is Electricity bill is paid and it is measured using ____ which is mounted on the outside wall of our house.

(a)  

SI unit of electrical energy is ____ and flow of ____ is responsible for electric current.

(a)  

A _____ is used to make an appliance on or off and in off condition it disconnects an electrical appliance from ____ wire.

(a)  

In household all appliances are connected in _____ with mains as all the appliances will work at the same _____.

(a)  

Watt is the unit of _____ and

1kW= ___W

(a)  

1kWh = ______ J if a meter reads 7643 units one day and 7743 units the following day then

Electrical energy consumed in a day = ____ kWh

(a)  

The colour coding of live wire is ____ or _____

(a)  

The two wire which are at same potential (0 V) are ____ wire and ___ wire.

(a)  

1 watt = 1 ____ × 1 ampere and Q is the symbol of which physical quantity ______

(a)  

Fuse wire is made up of an alloy of ___ and _____.

(a)  

All wires in the electric circuit should be covered with ____ material and the colour coding of neutral wire is _____.

(a)  

A fuse wire has low ____ and it should not be replaced with a wire made up of _____ which is used for making ordinary line wires.

(a)  

Short circuiting happens when naked live wire comes in contact with naked _____ wire or ____ wire.

(a)  

Full form of MCB is ______ and it is better than a fuse due to its ____ response.

(a)  

If an appliance has power P watt is used for t hours then electrical energy = (a)   kWh

If p.d is V volt current is I ampere and time is t seconds then expression for

Electrical energy= ___ J

Electric power= _____ W

(a)  

In a cable green wire is the ____ wire and if there are two fuse wire one 15A and other 10A which will be thicker _____

(a)  

The earth wire is connected to the (a)   of the appliance and provides connection to earth. It is at 0V.

If a bulb is rated 100W-250V, means if the bulb is connected across 250V supply it consumes ____ J energy in a time of ____ second.

(a)  

If a bulb is rated 100W-250V, then safe current for the bulb is (a)   A.

An electric iron of power 1.5kW is used for 90 minutes.

Electrical energy = (a)   kWh

0.75kWh= (a)   J

Assuming electrical energy consumed per day is 12kWh find how much money to be paid in a month of 30 days if rate of electricity is Rs.6 per unit.

Electricity Bill= Rs. (a)  

An electric bulb of 100W is used for 5 hours a day and an electric iron of 750W is used for 2 hours a day. The total electrical energy consumed in a day = (a)   kWh

C