Current & Circuits

Presentation

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Physics

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9th - 12th Grade

•

Medium

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CCSS.7.NS.A.1C, NGSS.MS-PS3-1, CCSS.8.EE.C.7B

Standards-aligned

Benjamin Flo

Used 10+ times

FREE Resource

15 Slides • 13 Questions

Current & Circuits

Good Things!

Get Ready for New Notes!

Multiple Choice

The SI unit in which kinetic energy is measured is

Newton

Kilogram

Joules

Metres per second

Multiple Choice

How much kinetic energy does a person of mass 50kg running at 3m/s have? Provide your answer in KJ (kilojoules) (Divide your joules amount by 1000)

225 KJ

0.225 KJ

75 KJ

0.075 KJ

Multiple Choice

What is the kinetic energy of a 25,000g object moving at a velocity of 2.5 m/s

78.125 J

31250 J

781.25 J

78,125 J

Multiple Choice

Why voltage is important?

Because it is the pressure that causes the electrons to move around in a circuit and make the current flow and make appliances work

To supply energy to be able to make the current flow in electric circuit and make appliances work

To control the resistance in the circuit

To reduce the current in the circuit

Multiple Choice

A kettle transfers 1000J of energy every 2 seconds. Calculate its power. Remember that Watts = Joules per second.

2000 Watts

1000 Watts

500 Watts

cannot be determined

Multiple Choice

A space heater transfers 500J of energy every 1 seconds. Calculate its power. Remember that Watts = Joules per second.

2000 Watts

1000 Watts

500 Watts

cannot be determined

ALSO!

1 Ampere = 1 Coulomb / second

A coulomb is the unit for electric charge

Multiple Choice

A refrigerator uses a standard voltage of 120 V and has a current of about 4.2 A. What is its power rating?

(HINT: Use PVC)

504 Watts

28.6 Watts

0.035 Watts

80 Watts

Multiple Choice

The current through a resistor is 0.025 A when it is connected to a 10 V voltage source. What is the resistance?

0.25 ohms

0.0025 ohms

400 ohms

40 ohms

Multiple Choice

How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor

12 volts

24 volts

1.3333

48 volts

Multiple Choice

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

25 V

10 V

2.5 V

0.4 V

Multiple Choice

What size resistor would produce a 3 Amp current flow with a 12 Volt battery

1 Ohm

3 Ohms

4 Ohms

12 Ohms

Total Resistance

The total Resistance of a circuit (R) = R₁ + R₂ + R₃ + ... R_x

Multiple Choice

Which one is a parallel circuit?

Multiple Choice

Which one is a series circuit?

Current & Circuits

Good Things!

Get Ready for New Notes!

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