Two, long currents are placed close to each other (one is above the other). The current that is above points to the right, while the current below points to the left. The magnetic field from the current above at the below one is **?** . And the magnetic force that the lower current feels from the above one is **?**. The magnetic force that the above current feels from the lower one **?** is , while the field from the lower current at the above one is **?**.

Two, long currents are placed close to each other (one is above the other). The current that is above points to the right, while the current below points to the left. The magnetic field from the current above at the below one is ? . And the magnetic force that the lower current feels from the above one is ?. The magnetic force that the above current feels from the lower one ? is , while the field from the lower current at the above one is ?.