How much current flows in a 1000 Ω resistor when there is a potential difference of 1.5 V?

If two resistors with resistances R1 and R2 are connected in parallel, then the total resistance R, measured in ohms (Ω), is given by 1/R =1/R1 + 1/R2. If R1 and R2 are increasing at rates of 0.3 Ω/s and 0.2 Ω/s, respectively, how fast (in Ω/s) is R changing when R1 = 80 Ω and R2 = 100 Ω?

What is the electrical potential difference between point A and B in the electric circuit below? V = 24 V, R1 = 20 Ω, R2 = 32 Ω, R3 = 44 Ω.

A 70 Ω resistor and 50-Ω resistor are connected in series to 12 V battery. What is the voltage difference across 70-Ω resistor?

The resistance of a bagel toaster is 11 Ω. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?

Two resistors have resistances R1 and R2, where R1 = 2.8R2. When configured in series and connected to a source potential of 23.6 V, they draw 0.723 W of power. If their configuration is changed to be in parallel and the source potential remains the same, what power does the circuit draw