Page 74 - CHAPTER-1 (Electricity)

CHAPTER 1

ELECTRICITY

11- Ohm-m

12- Remains same
13- Because the applied electric field setup almost instantly throughout the wire.

14- To circulate the electrons throughout the wire or circuit

15- 120 ohm.

16- Series arrangement is not used for domestic circuits because in series
arrangement same current will flow through all the appliances, which is not

required and the total resistance of domestic circuit will be sum of the resistance

of all appliances and hence current drawn by the circuit will be less.

Also we cannot use independent on/off switches with individual appliances.
17- 3 ohm

18- Electric power is the rate at which electric energy is transferred by an electric

circuit. The SI unit of power is the watt, one joule per second.

MATCH ME!

1- A-s , B-t , C-r , D-P , E-q

2- A-t , B-r , C-s , D-p
3- A-p , B-r , C-q , D-s

Cross-word

Across – 1 -CURRENT , 2-BATTERY , 3-VOLTAGE

Down- 2- Electrons

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