ELECTRIC CURRENT AND ITS EFFETCS

Identify the symbol-

• Electric Bulb

• Electric Cell

• Battery

• Switch in ON position

• Switch in OFF position

In olden days _______ were fitted in all buildings to prevent damage to electrical circuits and possible fires by high volt of current.(Please answer in small letters)

Which of the following devices usually can break a circuit - (Choose one or more options)

• Switches

• Fuses

• MCBs

• Miniature Circuit Breakers

Urvashi made a circuit and saw that some pins kept nearby were being attracted to the wires this is due to the __________ effect of electric current.

• Heating

• Gravitational

• Magnetic

• Attractive

Which of these is the symbol of a bulb?

• 
• 
• 
• 

Electric Bell works on the principle of-

• Magnetism

• Electromagnetism

• Gravitation

• Static Electricity

A bell only rings one time when switched on (The gong is hit only one time) because-

• Insufficient Electricity

• Electromagnet turned to or replaced by a permanent magnet

• Wiring Problem

• A mystical force

Ram saw a coil of wire glowing red hot in his room heater. What is it?

• Glower

• Just a coil of wire that became very hot

• Element

• A new kind of bulb

What is the full form of MCB-

• Massive Circuit Breaker

• Massive Circuit Body

• Mighty Circuit Breaker

• Miniature Circuit Breaker

Why people prefer to put an MCB in their house instead of fuse nowadays- (Choose one or more options)

• They are cheap.

• Fuses need to be changed every time they blow out.

• MCBs can be controlled manually.

• Fuses are expensive.