A 550-turn solenoid is 19 cmcm long. The current into it is 39 A. A 4.0 cm -long straight wire cuts through the center of the solenoid, along a diameter. This wire carries a 24 A current downward (and is connected by other wires that don't concern us). Required:
What is the magnitude of the force on this wire assuming the solenoid's field points due east?

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?