Electricity and...

Good conductors have many loosely bound

The property of a material, when it opposes or limits the flow of electric current through it is called

Ampere-second stands for the unit of

In a simple voltaic cell, the negative electrode is of

The simplest way of maintaining a potential difference between the two ends of a conductor is

The net e.m.f. of a normal dry cell is

Tungsten is mainly used for making filaments of electric bulbs because of its

Coating of iron with zinc is known as

When a current flowing through a resistance increases four times, the heat developed will increase

Chemical identity of an atom can be changed by

For the movement of electrons between two points, there must be a

Voltage can be generated

Fuse wire is made up of

How many 100 watt bulbs may be safely used on 220 volt with five amperes fuse?

One should not connect a number of electric appliances to the same power sockets because

You are given three bulbs of 25, 40 and 60 watt all operating at 220 V. Which of the three bulbs has the lowest resistance?

Current always flows from

Find out the correct statement.

If a magnet is cut into two pieces of equal length,

When a bar magnet is immersed in a heap of iron filings and is then taken out, it is observed that iron filings stick to the surface of the bar magnet. The iron filings would be observed to