L3.1: Heat and Electricity

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What happens during the process of conduction?

Electrons are gained through friction

Two charged objects repel each other

A neutral object repels a charged object

A charged object transfers charge to a neutral object (correct)

In induction, the charge on a conductor becomes the same as that of the charged object.

False

What is the unit of electric current?

Amperes

One electron has a charge of approximately ______ C.

1.6 x 10-19 Signup and view all the answers

Match the following charging processes with their descriptions:

Conduction = Transfer of charge through direct contact Induction = Charge separation without direct contact Friction = Charge transfer through rubbing Measurement = Quantifying flow of electric charges Signup and view all the answers

What is the specific latent heat of water (ice) in J/kg?

211 Signup and view all the answers

The heat of vaporization is the amount of energy required to melt a solid into a liquid.

False Signup and view all the answers

What equation represents the relationship between heat, mass, and change in temperature?

Q = m ΔT Signup and view all the answers

The temperature scale that measures absolute zero is called __________.

Kelvin Signup and view all the answers

Match the following substances with their specific latent heat:

Water (ice) = 211 J/kg Copper = 38 J/kg Lead = 13 J/kg Iron = 45 J/kg Signup and view all the answers

What does the kinetic molecular theory state about particles in matter?

Particles are always in motion. Signup and view all the answers

Heat flows from a cold object to a hot object until thermal equilibrium is reached.

False Signup and view all the answers

What is the measure of kinetic energy in particles referred to as?

Temperature Signup and view all the answers

A ______ has a definite volume and the highest mass per unit volume.

solid Signup and view all the answers

Match the states of matter with their descriptions:

Solid = Compressed, definite volume, highest mass per unit volume, strong bonds Liquid = Definite volume, low KE, weak bonds, flow Gas = Lowest mass per unit volume, high KE, weak bonds, high speed Signup and view all the answers

Which material stores more heat energy when heated?

Water Signup and view all the answers

Gold heats up faster than water when subjected to the same amount of heat.

True Signup and view all the answers

What is the initial temperature of both gold and water in this scenario?

20°C Signup and view all the answers

Water stores about _____ times more heat energy compared to gold.

30 Signup and view all the answers

Match the materials with their heat energy storage capability:

Gold = Stores less heat energy Water = Stores more heat energy Signup and view all the answers

What is the formula for calculating voltage in a circuit?

$V = I imes R$ Signup and view all the answers

In a series circuit, the total current varies while the resistance remains constant.

False Signup and view all the answers

Calculate the resistance (R) if the voltage (V) is 120 V and the current (I) is 30 A.

4 Ω Signup and view all the answers

The unit of current is _ and is measured in _

Ampere, A Signup and view all the answers

Match the following concepts to their characteristics:

Series Circuit = Same current through every component Parallel Circuit = Voltage is the same across components Voltage (V) = Electrical pressure that pushes electricity Resistance (R) = Opposition to the flow of charge Signup and view all the answers

In a series circuit, how is total resistance calculated?

$R_{eq} = R_1 + R_2 + R_n$ Signup and view all the answers

In a parallel circuit, the current is the same throughout all components.

False Signup and view all the answers

What is the total voltage in a series circuit?

The total voltage is the sum of the voltages across each resistor. Signup and view all the answers

A __________ is used to protect a circuit from damage due to excessive current.

circuit breaker Signup and view all the answers

Match the following components with their definitions:

Fuses = Protect against overheating by melting Series Circuit = Single path for current flow Parallel Circuit = Multiple paths for current flow Voltage = Potential difference across components Signup and view all the answers

Without respect to time, which of the following objects has MORE thermal energy and MORE calories?

water Signup and view all the answers

Without respect to time, which of the following objects would have a HIGHER temperature?

copper Signup and view all the answers

L3.1: Heat and Electricity

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Questions and Answers

What happens during the process of conduction?

In induction, the charge on a conductor becomes the same as that of the charged object.

What is the unit of electric current?

One electron has a charge of approximately ______ C.

Match the following charging processes with their descriptions:

What is the specific latent heat of water (ice) in J/kg?

The heat of vaporization is the amount of energy required to melt a solid into a liquid.

What equation represents the relationship between heat, mass, and change in temperature?

The temperature scale that measures absolute zero is called __________.

Match the following substances with their specific latent heat:

What does the kinetic molecular theory state about particles in matter?

Heat flows from a cold object to a hot object until thermal equilibrium is reached.

What is the measure of kinetic energy in particles referred to as?

A ______ has a definite volume and the highest mass per unit volume.

Match the states of matter with their descriptions:

Which material stores more heat energy when heated?

Gold heats up faster than water when subjected to the same amount of heat.

What is the initial temperature of both gold and water in this scenario?

Water stores about _____ times more heat energy compared to gold.

Match the materials with their heat energy storage capability:

What is the formula for calculating voltage in a circuit?

In a series circuit, the total current varies while the resistance remains constant.

Calculate the resistance (R) if the voltage (V) is 120 V and the current (I) is 30 A.

The unit of current is _____ and is measured in _____

Match the following concepts to their characteristics:

In a series circuit, how is total resistance calculated?

In a parallel circuit, the current is the same throughout all components.

What is the total voltage in a series circuit?

A __________ is used to protect a circuit from damage due to excessive current.

Match the following components with their definitions:

Without respect to time, which of the following objects has MORE thermal energy and MORE calories?

Without respect to time, which of the following objects would have a HIGHER temperature?

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