What is the difference between open and closed circuits?

Why copper were is used as connecting wires in the circuit?

What happens to resistance of the conductor
(i) when temperature is increased
(ii) length is doubled
(iii) area of cross section is increases

Write the difference between ammeter and voltmeter.

Write the difference between conductor and insulator.

Write the difference between electric energy and electric power.

Out of 100 W and 40 W bulbs, which has high electrical resistance when in use.

Give the formula for the following
(i) Ohm's law
(ii) Joules law 
(iii) Effective resistance for resistance in series
(iv) Power
(v) Specific resistance

Draw a closed circuit diagram consisting of resistor, ammeter, voltmeter cell and a point key

Should the resistance of an ammeter be low or high? Give reason.

Write electrical use of the components in electrical circuit.

Define parallel & series connection.

Find the effective resistance of series connection of parallel resistors.

Find the total resistance of parallel connection of series resistors?

Derive the equation of Ioule's law of heating.