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Series Circuits - Ohms Law & Power

Total questions: 28

Worksheet time: 51mins

Name

Class

Date

Solve for the total resistance of the circuit shown

50 ohms

1970 ohms

1705 ohms

63 ohms

Solve for total current in the circuit.

0.025 amps

25 amps

98,500 amps

39.4 amps

Voltage drop stands for what?

the voltage applied to a circuit

the voltage at the battery source

the voltage used at each resistor

With three 10 ohm resistors connected in series with a 30 volt power supply, the total circuit current will equal ____.

300 amps

1 amp

150 amps

3 amps

Using the circuit shown solve for total power dissipated in this circuit.

20 watts

30 watts

1.8 watts

180 watts

In a series circuit when the total voltage stays the same and circuit resistance decreases, current will ____________.

increase

Stay the same

Decrease

Ohm's Law is equal to...

V=I/R

V=1/IR

V=IR

V=2IR

What is the total resistance in this series circuit?

350 $\Omega$

550 $\Omega$

500 $\Omega$

450 $\Omega$

Which resistor has the most current going through it?

100 $\Omega$

50 $\Omega$

300 $\Omega$

all have the same current

10.

What is the total current of the circuit?

0.33A

11.

What is the current going through the middle resistor?

0.33A

12.

If bulb A uses 4 volts and bulb B uses 3 volts, how much voltage would bulb C use?

13.

If the current is 15 A and the resistance is 4Ω, what is the power?

900 W

30 W

400 W

60 W

14.

If the voltage is 100V and the current is 20A, what is the resistance of the circuit?

2000 $\Omega$

3 $\Omega$

7 $\Omega$

5 $\Omega$

15.

When the second bulb is added, they get

brighter

dimmer

broken

cold

16.

What can you say about the current in the series circuit?

it splits across the components

it changes constantly

it is different in different places

it is the same everywhere

17.

If one bulb was broken, what would happen?

current would no longer flow, so everything would be off

the ammeter would measure a current from the other bulb

the switch would keep the current flowing

the cell would burn out and catch fire

18.

What happens to the current as more resistance is added to a series circuit?

C) Remains the same

D) Fluctuates

B) Decreases

A) Increases

19.

If an LED has 10 volts and 45 watts, what would be the current?

4.5 amps

450 amps

45 amps

4 amps

20.

What size resistor would produce a 3 Amp current flow with a 125 watts applied?

13.9 Ohms

3 Ohms

375 Ohms

12 Ohms

21.

A Keurig machine draws 5 A. The voltage of the outlet is 120 V. How much power is required?

600 w

300 w

24 w

5 w

22.

How much current does a laptop draw if it is rated at 360 w? A household circuit provides 120V.

43,000 A

120 A

30 A

3 A

23.

The units for power are

Joules

volts

watts

amps

24.

What will be the current drawn by an electric bulb of 1000 W when it is connected to a source of 220 V?

4.55 A

28800 J or 28.8 KJ

80 W

200 W

25.

What resistance is needed to cause a 50A current flow because of a 500V battery?

10Ώ

5Ώ

2500Ώ

550Ώ

26.

Total power can be calculated by _________ the power at each component in a circuit.

adding

multiplying

using the same

subtracting

27.

Select the TWO formulas used to calculate power.

P = IV

P = I²R

P = IR²

P=IR

28.

I have three batteries that provide 9V of voltage each and are connected in series. How much total voltage do they provide together?

9 V

27 V

18 V

Reset

Series Circuits - Ohms Law & Power

Total questions: 28

Worksheet time: 51mins

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