201-300

201. Which of the following is 1Amp? (Level 1)

• a) 1000 A
• b) 1000 kA
• c) 1000 mA

202. 1 Ampere will equal to? (Level 2)

• a) 6.25 x 10^15 electrons per second.
• b) 6.25 x 10^21 electrons per millisecond.
• c) 6.25 x 10^18 electrons per second.

203. What type of current exist in conductive liquids? (Level 2)

• a) Electron current
• b) Ion and electron currents
• c) Ion currents

204. An electric current is a flow of (Level 2)

• a) Electrons from a positively charged area to a negatively charged area
• b) Protons from a positively charged area to a negatively charged area
• c) Electrons from a negatively charged area to a positively charged area

205. Which types of material contain positive charges? (Level 1)

• a) Nylon, Silver, Copper, lead
• b) Sulfur, Polyester, Silicon, Celluloid
• c) Glass, human hair, silk, lead, aluminium

206. What will happen when rubbing glass rod and silk? (Level 1)

• a) Nothing happens
• b) Glass rods receive electrons and become negatively charged
• c) Glass rods give up electrons and become positively charged

207. A piezoelectric device generates electricity through (Level 1)

• a) Pressure
• b) Friction
• c) Light

208. The direction of the induced voltage depends on (Level 1)

• a) The movement of the magnetic field
• b) The movement direction as well as the direction of the magnetic field
• c) The voltage applied

209. Which direction will the electron of the conductor be caused to deflect during induction process? (Level 1)

• a) Lateral
• b) Longitudinal
• c) Freely move

210. What is the main function of photocells? (Level 1)

• a) Provide heat for conductor
• b) Generators of electrical voltage
• c) Produce energy for transmitting voltage