Acapacitor that is initially uncharged is connected in series with a resistor and a 407.1 vemf source with negligible internal resistance. just after the circuit is completed, the current through the resistor is 0.850 maand the time constant for the circuit is 6.20 s. part a: what is the resistance of the resistor?
part b: what is the capacitance of the capacitor

20) what is a magnetic field? 21) in which direction do magnetic field lines always point? 22) sketch a diagram showing how a plotting compass points around a 23) name two magnetic poles that will: a) attract each other b) repel each other. 24) explain why you can use a compass to navigate. 25) what's an electromagnet? 26) list two ways to increase the strength of an electromagnet. 27) the wire in a simple motor feels a force when a current flows through it. why is this? i need answers to check mine