Electric Current and its Effects

Fill in the blank:

______________ assigns a Standard Mark on products, called ISI Mark.

• Bureau of Indian Standards

• Bureau of International Standards

• Bureau of Industrial Standards

• Bureau of Quality Standards

Who was the first person to notice the deflection of compass needle everytime the current was passed through a wire kept nearby?

• Thomas Edison

• Albert Einstein

• Hans Christian Oersted

• Michael Faraday

Which of the following is not an effect of electric current?

• Heating Effect of electric current

• Colour Changing Effect of electric current

• Magnetic Effect of electric current

What is the full form of MCB?

• Miniature Circuit Binder

• Malfunction Correcting Box

• Miniature Current Breaker

• Miniature Circuit Breaker

Fill in the Blanks:

A Fuse Wire has _______ electrical resistance and _______ melting point.

• high, low

• low, low

• low, high

• high, high

Fill in the blanks:

In the symbol of electric cell, the ______ line represents the positive terminal and the thicker, _________ line represents negative.

• shorter, longer

• longer, shorter

• short, shorter

• long, longer

This symbol represents which electric circuit component?

• transistor

• battery

• nothing

• wire

The coil of wire found in appliances such as room heater, electric cooking heater is called ________.

• element

• heat coil

• red coil

• hot coil

Fill in the blank:

CFLs and fluorescent tubes contain _________.

• H₂SO₄

• carbon vapour

• mercury vapour

• nitrogen oxide

Which of the following consumes the least amount of electricity to produce a given intensity of light?

• Incandescent electric bulb

• LED bulb

• CFL