19.2 Using Electrical Energy

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•

Physics

•

10th Grade

•

Medium

Alaa Mattar

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4 Slides • 6 Questions

19.2 Using Electrical Energy

😉

Learning check point 1

Power Equations 😄

Multiple Choice

A heater has a resistance of 10 ohms. It operates on 120.0 V.

a) What is the power of the heater?

902 W

1440 W

Multiple Choice

b) Great! So we found P = 1440 W. Can you now Find what thermal energy is supplied by the heater in 10 s?

14400 J

9000 J

Learning check point 2

Electrical Energy😊

Multiple Choice

What happens if we increase resistance in a wire?

Temperature increases because electrons bump into atoms

Temperature decreases because electrons bump into atoms

Multiple Choice

What is a superconductor?

a material with resistance

a material with no resistance

Multiple Choice

An electric space heater draws in 15.0 A from a 120 V source. It is operated, on average for 5.0 h each day.

a) How much power does the heater use?

2.9 kW

1.8 kW

Open Ended

Any questions?

Type response here

Bye bye Semester 2

We got this!

19.2 Using Electrical Energy

😉

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