The answer is 2 Amps. 

If you got 2 Amps you did great!  

To use a calculator to find the current in a circuit, put in 20 first (because the voltage is 20 volts) divided by 10 (because the resistance in the circuit is 10 ohms) and then push the equal button.  The answer is in amps.  

If you did not get the correct answer, click your back button and do it again.  The next page takes about 30 seconds to load over a 30K dial-up connection so please be patient.  If you did get the correct answer, click here to continue.