Level 10 Physics Pre-Test

Which of the following is a method of generating alternating current (AC)?

• Using photovoltaic cells

• Using turbines turned by wind

• Using batteries

• Using chemical reactions

What type of current is generated by photovoltaic cells?

• Alternating current (AC)

• Direct current (DC)

• Both AC and DC

• Neither AC nor DC

Which of the following energy sources can be used to turn turbines for generating electricity?

• Wind

• Water

• Nuclear energy

• All of the above

According to Newton's second law of motion, what is the relationship between force (F), mass (m), and acceleration (a)?

Which of the following is NOT a source of energy for generating electricity using turbines?

• Wind

• Tides

• Photovoltaic cells

• Steam from combustion

Newton's first law of motion is also known as:

• Law of Acceleration

• Law of Inertia

• Law of Action and Reaction

• Law of Universal Gravitation

If an object is at rest and the net external force acting on it is zero, according to Newton's first law, the object will:

• Start moving

• Remain at rest

• Accelerate

• Change direction

What is the unit of force in the metric system?

• Kilogram (kg)

• Metre (m)

• Newton (N)

• Joule (J)

Which of the following statements is true about direct current (DC)?

• It changes direction periodically.

• It is generated by turbines.

• It flows in one direction only.

• It is used in household power supply.