Have a look at this worked example before going on to try the questions.
An electrician used the formula below to find the total resistance in an electrical circuit.
Where is the total resistance
and are resistors in the circuit
Calculate the resistance in the circuit when is and is
We are told and
Put these values into the formula above
Use the formula in Example 2 to find the total resistance in the circuit when
Find the value of when and .
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