Equivalent Resistance

Practice Questions

AP Physics 1 › Equivalent Resistance

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Consider the circuit:

Circuit_4

If the current flowing through the circuit is , what is the value of R1?

$R2 = 2 (R1),\ R3 =2(R2),\ R4 = 2 (R3)$

A circuit contains three resistors. Two of the resistors are in parallel with each other, and the third is connected in series with the parallel connection. If all the resistors' resistances must add to $8\Omega$ , what resistance should the resistor in series have to minimize the equivalent resistance?

Consider the circuit:

Circuit_4

If the equivalent resistance of the circuit is $3\Omega$ , which of the following configuration of resistance values is possible?

Two resistors, $R_{1}=15\Omega$ and $R_{2}=10\Omega$ , are connected in series. What is the equivalent resistance of this setup?

Two resistors, $R_{1}=15\Omega$ and $R_{2}=10\Omega$ , are connected in parallel. What is the equivalent resistance of this setup?

Consider the given circuit:

Circuit_2

What is the current through the system if we attach a $5\Omega$ resistor from point A to B?

$R1 = 3\Omega$

$R2 = 2\Omega$

Calculate the equivalent resistance, of four resistors in parallel, which values $R_1 = 5 \Omega, R_2 = 10 \Omega, R_3 = 1 \Omega, R_4 = 6 \Omega$ .

Consider the given circuit:

Circuit_2

How much resistance must be applied between points A and B for the circuit to have a total current of 3A?

$R1 = 3\Omega$

$R2=2\Omega$

Consider the circuit:

Circuit_4

If the equivalent resistance of the circuit is $10 \Omega$ and each resistor is the same, what is the value of each resistor?

A circuit has 10 identical resistors in parallel with a battery of , and a total resistance of $\frac{1}{20} \Omega$ . Determine the voltage drop across one resistor.

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