How large a current would a very long, straight wire have to carry so that the magnetic field 2.20 cm from the wire is equal to 1.00 g (comparable to the earth's northward-pointing magnetic field)?

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer