Fill ups
Among silver and copper……………is a better conductor.

Electrical resistivities of some substances at 20^@C are given below: Among silver and copper, which one is a better conductor? Why?

Which among iron and mercury is a better conductor?

These days people use steel utensils with copper bottom. This is supposed to be good for uniform heating of food. Explain this effect using the fact that copper is the better conductor.

Fill ups The current flowing through a conductor is directly proportional to the applied…………across the ends of the conductor. Provided the physical conditions remains the same.

A student has been collecting silver coins and copper coins. One day he observed a black coating on silver coins and a green coating on copper coins. Which chemial phenomenon is responsible for these coatings. Write the chemical name of black and green coatings.

A purse contains 2 silver and 4 copper coins. A second purse contains 4 silver and 3 copper coins. If a coin is pulled at random from one of the two purses, what is the probability that it is a silver coin?

Fill ups: The…………………….field inside a hollow conductor is……………

Fill ups ……………….established in 1820 that a conductor carrying current produces a magentic field around it.

A tester is used to check the conduction of electricity through two liquids ,labelled A and B. It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. You would conclude that liquid A is a better conductor than liquid B. Liquid B is a better conductor than liquid A. both liquids are equally conducting. conducting properties of liquid cannot be compared in this manner.