Electronics

who is the scientist that observed static electricity for the first time?

• Albert Einstein

• Isaac Newton

• William Gilbert

• John Dalton

Which of the following answer is not an example for static electricity?

• Attraction of pieces of paper to a comb rubbed against hair

• The 'tick tock' sound of a clock

• Attraction of hair to a balloon rubbed against a wool

• Lightning

Choose the Answer that contains only conductors

• A plastic straw, an aluminum spoon, a coin

• A coin, an eraser, a needle

• A needle, Copper wire, a coin

• A wooden spoon ,an eraser, a dollar bill

Which of the following is an insulator?

• A gold earing

• A silver spoon

• A copper wire

• A plastic ruler

Which electrical component is represented with the above symbol in a circuit?

• A battery

• A capacitor

• A switch

• A resistor

Choose the correct symbol of a bulb from the below symbols

• 
• 
• 
• 

What instrument is used to measure the electric current?

• An ammeter

• A voltmeter

• A resistor

• A transistor

The above picture represents,

• A switch

• A capacitor

• A battery

• A resistor

In which of the following circuit does the bulb light up?

• 
• 
• 
• 

Which of the following components helps to control the volume(increase and decrease) in a radio?

• A transistor

• A diode

• A resistor

• A switch