# A charge of #18 C# passes through a circuit every #2 s#. If the circuit can generate #24 W# of power, what is the circuit's resistance?

The resistance of the circuit is 6 ohms.

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The resistance is

The charge is related to the time and the current by the

The power is

But Ohm's Law states that

So,

Therefore,

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- A charge of #4 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #25 J# to #17 J#, what is the voltage between points A and B?
- A charge of #16 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #22 J# to #9 J#, what is the voltage between points A and B?
- An electric toy car with a mass of #4 kg# is powered by a motor with a voltage of #7 V# and a current supply of #3 A#. How long will it take for the toy car to accelerate from rest to #7/2 m/s#?
- How much power is produced if a voltage of #9 V# is applied to a circuit with a resistance of #6 Omega#?
- An electric toy car with a mass of #2 kg# is powered by a motor with a voltage of #4 V# and a current supply of #1 A#. How long will it take for the toy car to accelerate from rest to #3 m/s#?

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