how much current would flow through a circuit that has 1000 ohms of resistance if powered by 1.5 volts

Using Ohm's law, we can calculate the current (I) that would flow through the circuit:

I = V/R
where V is the voltage (1.5 volts) and R is the resistance (1000 ohms).
I = 1.5/1000
I = 0.0015 amps or 1.5 milliamps (mA)
Therefore, 1.5 milliamps of current would flow through the circuit.