If a current of #5 A# passing through a circuit generates #90 W# of power, what is the resistance of the circuit?

Answer 1

Charlotte Aaron

#3.6Omega#

Power #P = I^2R# where #I# is the current and #R# is the resistance.

#:.R = P/I^2 = 90/25 = 18/5 = 3.6Omega#

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Answer 2

Amelia Adams

To find the resistance of the circuit, you can use the formula:

Resistance (R) = Voltage (V) / Current (I)

Given: Current (I) = 5 A Power (P) = 90 W

First, calculate the voltage using the formula:

Power (P) = Voltage (V) * Current (I)

Then, rearrange the formula to solve for voltage:

Voltage (V) = Power (P) / Current (I)

Substitute the given values:

Voltage (V) = 90 W / 5 A Voltage (V) = 18 V

Now, use Ohm's law to calculate the resistance:

Resistance (R) = Voltage (V) / Current (I) Resistance (R) = 18 V / 5 A Resistance (R) = 3.6 ohms

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Answer from HIX Tutor

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.