Ohm's law |  Resistance |  Power Calculations

Try Each Problem Below - Some Practice Exercises For You

Suggestion

First sketch a circuit diagram on a piece of paper. Enter the information that you are given. Write down what you have to find too - the missing information. Then decide how the various Ohm's Law formulas can be used to find the solution.

Nominal names are given in these circuits to identify the current, the voltage and the resistors themselves.

Place your cursor over the antenna symbol to check your answer. The correct solution will appear. You don't have to click. If this method does not work, the answers for each question, follows at the end of the questions.

The SIMPLE Circuit

A Given I₁= 2 amp, and R₁ = 3 ohm, find Es

B Given Es = 12 volt, R₁ = 2 ohm, find I₁

C Given that Es = 100 volt, I₁ = 50 mA, find R₁

D Given that R₁ = 10 ohm, I₁ = 3 Amp, find the power dissipated in R₁

E Given that R₁ = 10 ohm, Es = 5 volt, find the power dissipated by R₁

The PARALLEL Circuit

F Given I₁= 2 amp, and I₂ = 4 amp, find I₃

G Given Es = 12 volt, I₃ = 2 amp, and that R₁=R₂, Find the value of each of R₁ and R₂

H Given that R₁ = 10 ohm, R₂ = 10 ohm, and I₃ = 2 amp, find Es

J Each resistor is 10 ohm, I₃ is 6 amp, what is the power dissipated by each resistor?

The SERIES Circuit

K Given that R₃=R₄, and Es = 12 volt, find E₃ and E₄

L Given Es = 12 volt, I₃ = 2 amp, and that R₃=R₄, Find the value of each of R₃ and R₄

M Given that R₃ = 10 ohm, R₄ = 20 ohm, and I₃ = 2 amp, find Es

N Each resistor is 10 ohm, I₃ is 6 amp, what is the power dissipated by each resistor?

SERIES and PARALLEL Circuits

O Given I₁= 2 amp, and I₂ = 4 amp, find I₃

P Given that R₁ = R₂ = 8 ohm, I₃ = 2 amp, Es = 12 volt, find the total value of R₃ and R₄

Q Given that all resistors are 10 ohm, and I₃ = 2 amp, find Es

R Each resistor is 10 ohm, I₃ is 6 amp, what is E₁, E₃, E₄ and Es?

S Each resistor is 10 ohm, I₃ is 6 amp, what is the power dissipated by each resistor?

Answers For The SIMPLE Circuit

A Es = 6 volt

B I₁ = 6 amp

C R₁ = 2000 ohm

D the power dissipated in R₁ = 90 watt

E the power dissipated by R₁ = 2.5 watt

Answers For The PARALLEL Circuit

F I₃ = 6 amp

G R₁ = 12 ohm and R₂ = 12 ohm

H Es = 10 volt

J the power dissipated by each resistor is 90 watt

Answers For The SERIES Circuit

K E₃ = 6 volt and E₄ = 6 volt

L R₃ = 3 ohm and R₄ = 3 ohm

M Es = 60 volt

N the power dissipated by each resistor is 360 watt

Answers For SERIES and PARALLEL Circuits

O I₃ = 6 amp

P the total value of R₃ and R₄ is 2 ohm

Q Es = 50 volt

R E₁ = 30 volt, E₃ = 60 volt, E₄ = 60 volt and Es = 150 volt

S the power dissipated by each resistor is R₁ = 90 watt; R₂ = 90 watt; R₃ = 360 watt; R₄ = 360 watt