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Electricity : compute resistance, voltage, current

Authored by Lucia Hilario

Science

8th Grade

Used 1+ times

Electricity : compute resistance, voltage, current
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17 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Without considering the LED light, what would the current be in this schematic?

0.01A

73.3A

220A

660A

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The circuit shown contains a battery, a 6.0 Ω resistor and two meters X and Y.


One meter records current and one meter records potential difference.

meter X : 2.0 A

meter Y : 12.0 V

meter X : 2.0 V

meter Y : 1.0 A

meter X : 12.0 A

meter Y : 2.0 V

meter X : 12.0 V

meter Y : 2.0 A

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In the model, what do the arrows represent?

The flow of current

The flow of resistance

The flow of voltage

The flow of positrons

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A current of 12 A flows for 20 minutes into an electric cooker.


How much charge has the cooker used?

14400 C

280 C

100 C

0.6 C

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?

18Ω

36Ω

200Ω

400Ω

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If a computer has 10.0A of current and 11Ω of resistance, what is its voltage?

0.9V

1.1V

55V

110V

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the formula for voltage?

V = (I x R) / 2

V = I / R

V = R / I

V = I x R

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