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practical electricity

practical electricity

Assessment

Interactive Video

Physics

7th Grade

Practice Problem

Hard

Created by

Raymond Loh

FREE Resource

6 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is power?

The rate of doing work

The total energy consumed

The amount of force applied

The speed of energy transfer

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the SI unit for power?

Volt

Ampere

Ohm

Watt

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following formulas represents electrical energy (E)?

E = VIt

E = VI

E = I²R

E = V²/R

4.

MULTIPLE CHOICE QUESTION

30 sec • Ungraded

Are you enjoying the video lesson?

Yes

No

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula is used to calculate electrical power (P) based on potential difference (V) and current (I)?

P = VIt

P = VI

P = I²R

P = V²/R

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An electric kettle connected to a 220V mains supply draws a current of 10A. What is the power of the kettle?

22 W

220 W

2200 W

22000 W

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