What is the primary energy source for solar energy products?

• Wind

• Sun

• Water

• Geothermal

Which of the following is NOT a type of solar energy product?

• Solar water heater

• Solar inverter

• Gas generator

• Solar lantern

Which emerging technology is improving solar panel efficiency significantly?

• Perovskite solar cells

• Silicon carbide semiconductors

• Copper oxide conductors

• Nano-silver wiring

Bifacial solar panels generate electricity from:

• One side only

• Both sides

• Only in direct sunlight

• Only in indirect sunlight

Which of the following is NOT an application of solar photovoltaic (PV) technology?

• Grid-connected power generation

• Space satellites

• Hydropower stations

• Off-grid rural electrification

What is the primary benefit of solar PV systems in remote areas?

• Low maintenance cost

• High carbon emissions

• Requires frequent fuel refills

• Unstable power supply

Which meteorological factor affects solar panel performance the most?

• Wind speed

• Humidity

• Solar irradiance

• Atmospheric pressure

What is the unit of solar insulation measurement?

• Watts per meter square (W/m²)

• Joules per hour (J/h)

• Kelvin per second (K/s)

• Newton per meter (N/m)

What is the SI unit of electric current?

• Ohm

• Ampere

• Watt

• Joule

Which law states that voltage is directly proportional to current?

• Ohm's Law

• Kirchhoff's Law

• Faraday's Law

• Lenz's Law