tentiometer consisting of a wire of length = 10 cm has a source of emf, & = 15V connected across it. When a standard cell with emf V = 6V, in series a voltmeter, is connected at one end of the wire and at a distance L along the wire the voltmeter circuit is in balance and the voltmeter reads

At time t = 0, an RC circuit consists of a 20.0-V emf device, a 66.0-0 resistor, and a 140.0-uF capacitor that is fully charged. The switch is thrown so that the capacitor begins to discharge. (a) What is the time constant z of this circuit? (b) How much charge is stored by the capacitor at t = 0.5r, 2r, and 4r? q(t = 0.5t) = q(t = 21) = q(t = 47) =

For a parallel circuit, the power storage voltage is 6 V.  The nominal resistance for R1 and R2 is 150 ohms and 220 ohms, respectively. If 1/Rt = R2 +R2/R1*R2, then Rt R1*R2/R2+R1 =1 From the attached, so as to understand conceptually, can you explain and describe from the nominal resistance for R1 and R2 given, the general nature of a parallel circuit in terms of the columns given specified in the variables and the relationship, such a V to V1 and V2; I to I1 and I2, then I1 +I2?

You are given V= 20V and R= 15ohms, and are asked to solve the circuit for I2.