7th Grade Remedial Physics PTS 2nd Semester

Resistor is used for

• Reducing power

• Blocking voltage

• Adding resistance

• Overheating circuit

This man invented radio in 1896.
Who is he ?

• Nikola Tesla
• Alexander Graham Bell
• Guglielmo Marconi
• Thomas Edison

Sienna want to measure the amount of current in a circuit, which item she can use ?

• voltmeter
• ammeter
• ampere

• barometer

Wilhelm Roentgen in 1895 invented ......

• Gamma rays
• Ultraviolet rays
• Infrared rays
• X-rays

These are Physical model, except

• Miniature ship

• Baking soda volcano

• Digital blueprint

• Tesla coil

1 Ampere = 1 Coulomb/ 1 second

1 Coulomb = 6.24 x 10¹⁸ electrons

2 Ampere =

• 12.48 x 10¹⁸ electrons

• 3.12 x 10¹⁸ electrons

• 6.24 x 10¹⁸ electrons

• 4.96 x 10¹⁸ electrons

Which of these material is an electrical insulator ?

• Metal
• Rubber
• Nickel

• Salt Water

Inside nucleus contained....

• Proton and Electron

• Electron

• Proton and Neutron

• Neutron and Electron

Which bulb turned off when R2 breaks?

• R1

• R2 only

• R3

• R4

Which bulb turned off when R4 breaks?

• R5

• R6

• R3

• R4