# Energetics 2 ph Quiz

#### Quiz Description

In this second quiz on Energetics, we shall look deeply into some key aspects like; the various forms of energy, energy conversions, and the applications of energy in our day-to-day living. This is a very important aspect of physics that should be studied with a lot of concentration.

Energetics is a branch of physics that studies the various forms of energy, and their transformation. Real-life usage of energy can be seen as using the electrical energy stored in batteries to power and operate our electronic gadgets, and this energy must have been converted from another form (like solar energy). Another form of energy conversion could be the conversion of chemical energy stored in food, to mechanical energy when we exercise our bodies. So what is energy?

Energy is the ability or capacity to do work. There are many kinds of energy like solar energy, electrical energy, mechanical energy, nuclear energy, etc

Try this quiz and other A level Physics quizzes available on this platform. You can rest assured you’ll have a good grasp of the concept as you practice. Good luck!

Two resistors in series that can be used to provide a fraction of a given p.d is known as

Correct
• Potential divider
• Galvanometer
• Circuit breaker
• A shunt

A charger of 1.6x0.0000000010 C is placed in a uniform electric field of intensity 2.0 x 100000NC-1 . what is the magnitude of the electric force exerted on the charge?

Correct
• 3.2 x 1000000 N
• 1.8 x 1000000 N
• 3.2 x 0.00010 N
• 1.8 x 0.00010 N

An alternating voltage with a frequency of 50Hz has a period of

Correct
• 0.02sec
• 0.05sec
• 0.20sec
• 0.50sec

Which of the following statement is NOT true of a moving coil milliammeter?

Correct
• It can be used to measure a.c.
• It has a linear scale
• A resistor connected in parallel with the milliammeter would convert it to a voltmeter

Which of the following is NOT an evidence of the particle nature of matter

Correct
• Brownian motion
• Diffraction
• Crystal structure
• Photoelectricity

A cell of e.m.f. 1.5V and internal resistance of 2.5Ω is connected in series with an ammeter of resistance 0.5Ω and a resistance 7.0Ω. the current in the circuit is?

Correct
• 0.20 A
• 0.60 A
• 3.0 A
• 0.15 A

An inexhaustible source of energy can also be called

Correct
• Primary source
• Secondary source
• Renewable source
• Nonrenewable sources

Which of these sources of energy is NOT a fossil fuel?

Correct
• Randon gas
• Coal
• Oil
• Natural gas

An energy source which is consumed in the form it is produced

Correct
• Primary source
• Secondary sources
• Renewable sources
• Non renewable

Which of these is a form of energy which is mostly consumed in rural areas of Cameroon?

Correct
• Geothermal energy
• Tidal energy
• Nuclear energy
• Primary energy sources

What is the function of the control rods in a nuclear reaction?

Correct
• To regulate the reaction
• To adjust the heavy water used
• To regulate the neutrons
• To control the graphite

What is the main function of block B?

Correct
• Stores gravitational potential energy
• Converts K.e to electrical energy
• Converts gravitational potential energy to rotational K.e of turbine
• To control the graphite

If block C is taken away, what will be the effect to the local community

Correct
• Quantity of electricity supplied will be less
• The community will not have electricity
• The amount of electricity supplied will be too much
• Step up transformer will be used

Which of the following is true about a piece of n-type semiconductor?

Correct
• Has more conduction electrons than holes
• Has more holes than electrons
• Has equal number of holes and conduction electrons

Consider the equation ΔQ = ΔU + ΔW where the symbols represent their usual meanings. ΔU
represents

Correct
• The heat or energy given to a system
• The external work done
• The mean kinetic energy
• The change in internal energy