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Quiz by Nursultan Zhakupov, created more than 1 year ago

This is a short lesson about power and energy of electricity

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physics
power and energy

	Created by Nursultan Zhakupov about 7 years ago

8180526

quiz

2017-03-19T20:02:21Z

Comprehension Questions: Power and Energy

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Question 1 of 4

An electric heater uses 60 kJ of electrical energy in five minutes. What is the power rating of the heater?

Select one of the following:

720 kW
12 kW
1.2 kW
200 W

Explanation

Question 2 of 4

A small heater has a rating of 15V, 4A. How much energy does it consume if it is turned on for two minutes?

Select one of the following:

7.5 J
120 J
450 J
7200 J

Explanation

Question 3 of 4

Figure shows the electrical information of an electrical appliance.
(a) What is the current generated if the casserole is turned on at normal operating voltage of 230V and a power of 1400 W?

Select one of the following:

0.16 A
6.1 A
28 A
322 A

Explanation

Question 4 of 4

(b) How much electrical energy is consumed for one month (30 days), if the casserole is turned on for 2 hours everyday?

Select one of the following:

2.8 kJ
42 kJ
84 kJ
302 MJ

Explanation

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8180526

quiz

2017-03-19T20:02:21Z

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This is a short lesson about power and energy of electricity

Comprehension Questions: Power and Energy

Question 1 of 4

An electric heater uses 60 kJ of electrical energy in five minutes. What is the power rating of the heater?

Select one of the following:

Explanation

Question 2 of 4

A small heater has a rating of 15V, 4A. How much energy does it consume if it is turned on for two minutes?

Select one of the following:

Explanation

Question 3 of 4

Figure shows the electrical information of an electrical appliance. (a) What is the current generated if the casserole is turned on at normal operating voltage of 230V and a power of 1400 W?

Select one of the following:

Explanation

Question 4 of 4

(b) How much electrical energy is consumed for one month (30 days), if the casserole is turned on for 2 hours everyday?

Select one of the following:

Explanation

Figure shows the electrical information of an electrical appliance.
(a) What is the current generated if the casserole is turned on at normal operating voltage of 230V and a power of 1400 W?