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WorksheetsPower and Watt's Law
Total questions: 27
Worksheet time: 14mins
What is the relationship between power and work?
Power is the ability to do work.
Work is the ability to generate power.
Power and work are unrelated.
Work is the resistance to power.
Which laws are combined to find current, voltage, resistance, and power?
Ohm’s Law and Watt’s Law
Newton’s Law and Coulomb’s Law
Kirchhoff’s Law and Faraday’s Law
Boyle’s Law and Charles’s Law
What is power?
The rate at which work is done
The amount of energy stored
The force applied to an object
The speed of an object
What is a Watt?
A unit of force
A unit of power
A unit of energy
A unit of speed
What is electrical power?
The energy stored in a battery
The rate at which electrical energy is transferred
The voltage across a circuit
The resistance in a wire
What is the unit of power?
Newton
Joule
Joules/second
Meter
How is one joule defined in terms of force and distance?
The force of one newton moving an object one meter
The force of one joule moving an object one meter
The force of one newton moving an object one kilometer
The force of one joule moving an object one kilometer
In the context of building a house with blocks, what does power represent?
The number of blocks in the house
The amount of blocks that can be placed per hour
The total weight of the blocks
The height of the house
What is the unit of measurement for electric power?
Joules
Volts
Watts
Amperes
According to the text, what does one Watt equate to?
One Joule per minute
One Joule per second
One Volt per second
One Ampere per second
What happens when a power source is more powerful?
It transfers electricity slower
It transfers electricity faster
It produces less work
It uses more energy
Which of the following is a formula derived from Watt's Law?
P = I x E
R = V / I
C = Q / V
F = m x a
What mnemonic is used to remember Watt's Law?
Power Is Easy as PIE
Voltage Is Key as VIK
Current Is Simple as CIS
Energy Is Vital as EIV
What is the Watt’s Law Wheel also called?
PIRE wheel
Voltage wheel
Energy wheel
Resistance wheel
What does the symbol "P" represent in the Watt's-Ohm's Law Wheel?
Power
Pressure
Potential
Phase
Which formula represents the calculation of power using current and voltage?
P = I x V
P = V/R
P=I2xR
P=V2/R
In the Watt's-Ohm's Law Wheel, what does "I" stand for?
Current
Impedance
Inductance
Intensity
How is resistance (R) calculated using voltage (V) and current (I) according to the Watt's-Ohm's Law Wheel?
R = V/I
R = I/V
R=PV2
R=P/I2
What does Ohm's Law describe?
Voltage in electrical circuits
Current flow in electrical circuits
Resistance in electrical circuits
Power dissipation in electrical circuits
What does Watt's Law describe?
Voltage in electrical circuits
Current flow in electrical circuits
How power is dissipated
Resistance in electrical circuits
What formula would you use to find the power in Watts if you had the value of the resistance and the current?
P=I2∗R
P = V * I
P=V2/R
P = I / R
What is the total power delivered by a 9.0-V battery to a circuit with a 3.0-ohm resistor?
27 W
3 W
9 W
81 W
If a flashlight’s voltage rating is 24V and its current rating is 4A, what is its power rating?
96 W
48 W
24 W
12 W
Calculate the current of a DC motor that has a resistance of 25 Ω and it consumes a power of 40 W.
1.26 A
2.00 A
0.80 A
1.60 A
What is the formula to calculate the total power in a circuit?
Pt= P1 × P2 × ... × Pn
Pt= P1 + P2 + ... + Pn
Pt= P1 - P2 - ... - Pn
Pt= P1/P2/ ... / Pn
Which types of circuits use the same formula to find total power?
Only series circuits
Only parallel circuits
Series, parallel, and series-parallel circuits
Only series-parallel circuits
In which of the following scenarios is work being done, according to the physics definition?
Solving an equation
lifting up a book
holding a barbell above your head
keeping a bike from falling as it rolls along a sidewalk
