The attractive force results when a glass rod rubbed with a silk and a plastic rod rubbed with a fur brings together. During friction which type of charges are developed on glass rod and plastic rod?

Positive charge on glass rod and negative charge on plastic rod.

Negative charge on glass rod and positive charge on plastic rod.

Positive charge on glass rod and positive charge on plastic rod.

Negative charge on glass rod and negative charge on plastic rod.

What precaution should be taken during the use of electricity?

The different precautions taken during the use of electricity are; When working on any branch circuit or other electrical circuit, always wear appropriate insulated rubber gloves and eyewear. When working with electricity, stay away from water at all times. Wet hands should never be used to touch or attempt to repair any electrical equipment or circuits. Disconnect electrical gadgets when not in use and at the time of lightning and thundering.

The 1800 C electric charge is passing through an electric bulb in one hour. How much current will pass through an electric bulb ?

Let 'I' be the current flowing through the bulb. Given, charge ( Q ) = 1800 C Time ( t ) = 1 Hrs = 3600 s We know that, Q = I t ⇒ I = Q / t ⇒ I = 1800 / 3600 ⇒ I = 0 . 5 A

What is electric current? Which device (instrument) is used to measure the electric current?

A stream of charged particles, such as electrons or ions, travelling through an electrical conductor or space is known as an electric current. It's the net rate of electric charge flow through a surface or into a control volume that's monitored. An ammeter measures the electric current in a circuit. The ideal ammeter has zero internal resistance.