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Solar Energy Quiz

Total questions: 30

Worksheet time: 10hrs 0mins

Name
Class
Date
1.

What does a photovoltaic (PV) system primarily do?

a)

Store sunlight as heat

b)

Convert sunlight directly into electricity

c)

Reflect sunlight for cooling

d)

Use water to generate power

2.

Which of the following is a renewable source of energy?

a)

Coal

b)

Natural Gas

c)

Solar

d)

Oil

3.

The Philippines is suitable for solar energy because of its:

a)

Cold climate

b)

High solar irradiance year-round

c)

Large desert areas

d)

Abundant coal deposits

4.

Which law provides incentives like Feed-in Tariff (FIT) and Net Metering for renewable energy in the Philippines?

a)

RA 9136

b)

RA 9513

c)

RA 8749

d)

RA 9003

5.

A PV system that requires batteries and works independently of the grid is called:

a)

Grid-Tied

b)

Hybrid

c)

Off-Grid

d)

Smart Grid

6.

Which PV system combines solar panels, batteries, and possibly a generator while still connected to the grid?

a)

Off-Grid

b)

Grid-Tied

c)

Hybrid

d)

Microgrid

7.

Which current flows only in one direction?

a)

Alternating Current (AC)

b)

Direct Current (DC)

c)

Residual Current

d)

Pulsed Current

8.

According to Ohm's Law, Voltage = ?

a)

Current ÷ Resistance

b)

Current × Resistance

c)

Power ÷ Current

d)

Resistance ÷ Current

9.

If a device operates at 220 V and 11 A, what is its resistance?

a)

10 Ω

b)

20 Ω

c)

15 Ω

d)

25 Ω

10.

Which of the following is NOT an advantage of solar energy?

a)

Reduces carbon emissions

b)

Diversifies the energy mix

c)

Depends heavily on fossil fuels

d)

Provides rural electrification

11.

Resistance is measured in:

a)

Watts

b)

Amperes

c)

Ohms

d)

Volts

12.

Which factor decreases the resistance of a conductor?

a)

Increasing length

b)

Increasing resistivity

c)

Increasing cross-sectional area

d)

Increasing temperature

13.

The symbol "ρ" (rho) in electricity refers to:

a)

Power

b)

Current

c)

Resistivity

d)

Energy

14.

If R1 = 2Ω, R2 = 3Ω, R3 = 5Ω in series, total resistance is:

a)

b)

c)

10Ω

d)

15Ω

15.

Resistors in series have the same:

a)

Voltage

b)

Current

c)

Power

d)

Resistance

16.

If R1 = 4Ω and R2 = 6Ω in parallel, the total resistance is:

a)

2.4Ω

b)

c)

10Ω

d)

17.

Resistors in parallel share the same:

a)

Current

b)

Voltage

c)

Resistance

d)

Power

18.

Which arrangement gives lower total resistance than the smallest resistor?

a)

Series

b)

Parallel

c)

Series-Parallel

d)

None of the above

19.

The resistance of a conductor is directly proportional to its:

a)

Cross-sectional area

b)

Length

c)

Voltage

d)

Current

20.

The formula for resistance is:

a)

R = ρL/A

b)

R = Aρ/L

c)

R = L/Aρ

d)

R = V/I

21.

Which has higher resistivity?

a)

Copper

b)

Aluminum

c)

Silver

d)

Rubber

22.

When resistors are connected end-to-end, they are in:

a)

Series

b)

Parallel

c)

Mixed connection

d)

Loop circuit

23.

A 30V source supplies 5A to two resistors in series. What is the total resistance?

a)

2 Ω

b)

4 Ω

c)

6 Ω

d)

10 Ω

24.

If the current drops from 5A to 3A after doubling one resistor, what concept is being applied?

a)

Ohm's Law

b)

Kirchhoff's Law

c)

Joule's Law

d)

Power Law

25.

What is the main advantage of parallel circuits in household wiring?

a)

Increases resistance

b)

Decreases current

c)

Each device gets full voltage

d)

Reduces power

26.

If three resistors 2Ω, 3Ω, and 6Ω are connected in parallel, the total resistance is:

a)

11Ω

b)

c)

d)

27.

Which material is considered a poor conductor due to high resistivity?

a)

Silver

b)

Aluminum

c)

Plastic

d)

Copper

28.

What happens to resistance if the length of the conductor is halved?

a)

Doubles

b)

Halves

c)

Remains the same

d)

Becomes zero

29.

In a circuit, current is inversely proportional to:

a)

Power

b)

Resistance

c)

Voltage

d)

Energy

30.

A circuit has 12V and 4Ω resistance. What is the current?

a)

1A

b)

2A

c)

3A

d)

4A