Can you please help me with the questions below? :(

A 22.1 A current flows in a long, straight wire. Find the strength of the resulting magnetic field at a distance of 55.7 cm from the wire. TA circuit consists of two resistors connected to a power supply in parallel, as shown in the gure. The resistance of R1 is greater than the resistance of R2. Which resistor has the greater voltage difference across it? 0R2 0R1 O The voltage across each resistor is the same. Which resistor has the greater current owing through it? Q The current through each resistor is the same. 0R1 0R2 Approximately what is the smallest detail observable with a microscope that uses blue light of frequency 6.79 x 1014 Hz