Determine the active and reactive power in the load and the power factor if it is known that the voltage at the load V= -30 sin(wt+80°) V and the current I=-10 cos( wt+30° ) A.

A battery with an emf of 24 V and unknown internal resistance r is connected to a 6.0 W load resistor RL such that a current of 3.0 A flows through the load resistor. The output voltage of the battery (terminal voltage) is:

Current=1A V_ab=-12V V_bc=21V 4d. What is the total rate at which electrical energy is dissipatate in R1, R2, and R3 resistors. 4e. What is the power outpur of the 26V battery? 4f. At what rate is the electrical energt being converted to other forms in the 10V battery? 4g. Show that power output of the 26V battery equals the overall rate of dissipation of electrical energy in the rest of the circuit?

A heater is rated to dissipate 2880 W when connected to a 120 V source. The current drawn by the device is?

Apply the Junction Rule at B to determine the current going through RBC in terms of I1 and I3 .

what is the answer!?

for the capacitor used C = 1000 uF and R1 = 47 Kohms, calculate the time interval required to charge the capacitor from 2.0 V to 7.0 V if Vo = 10.0 V. Compare with this experimental results. Does the time interval depend on Vo?

You are working in a lab where RC circuits are used to delay the initiation of a process. One particular experiment involves an RC circuit with a half-life of t₁/2 life needs to be extended. He asks you to change the resistance of the circuit to make the half-life longer. All you can find in the supply room is a single 35.0 old to extend the half-life of the circuit. Determine the new half-life (in s). = 3.00 s. Your supervisor is concerned that the initiation of the process is occurring too soon and that the half- resistor. You look at the RC circuit and see that the resistance is 26.0 0. You combine the new resistor with the

A capacitor of 7.99 µF is discharged through a resistor of resistance R. The time constant of the discharge is 5.6 space cross times space 10 to the power of negative 3 end exponent s Calculate the value of R.

To reset IC chips in a system at power-on, the chips must be powered on and working already. That is to say that the reset signal needs to be after the power-on time. Assume that you need to generate a reset signal 1 ms after power-on using an RC circuit, what will be roughly the values of the resistor and capacitor?