electric current

Identify the symbol-

• Electric Bulb

• Electric Cell

• Battery

• Switch in ON position

• Switch in OFF position

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

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

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

LEDs full form is-

• Light Era Diode

• Light Etern Dot

• Light Emitting Dot

• Light Emitting Diode

Scientist (a)   was the first to notice the deflection of compass whenever current was passed through the wire near it. (Please answer in small letters)

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.