In a certain stereo system, each speaker has a resistance of 4.00 Ω. The system is rated at 60.0 W in each channel. Each speaker circuit includes a fuse rated at a maximum current of 4.00 A. Is this system adequately protected against overload?

The values of the components in a simple series RC circuit containing a switch (see figure below) are C = 1.00 μF, R = 2.00 x 106 Q2, and Ɛ = 10.0 V. At the instant 19.6 s after the switch is closed, calculate the following. (a) the charge on the capacitor q=9.99 με (b) the current in the resistor I = x nA R (c) the rate at which energy is being stored in the capacitor rate = nW (d) the rate at which energy is being delivered by the battery Pbattery nW

A DC circuit consists of a 30.5 V battery connected in series to two components. The first component is a variable resistor set to 1.7 Ohms. The second component is a set of four fixed resistors connected in parallel. The first fixed resistor is 7.9 Ohms, the second fixed resistor is 6.5 Ohms, the third fixed resistor is 5.3 Ohms and the fourth fixed resistor is 7.9 Ohms. What is the total current supplied by the battery to the circuit? Use standard abbreviations for MKS units. Your Answer: Answer units

The figure shows a battery connected to two resistors in series. What is the power dissipated across each resistor? R1 = 58.0 Ω, R2 = 2.60 Ω and V = 12.0 V. The power dissipated by R1 is 1.35×103 W and the power dissipated by R2 is 60.5 W The power dissipated by R1 is 2.27 W and the power dissipated by R2 is 0.102 W The power dissipated by R1 is 1.35×103 W and the power dissipated by R2 is 0.102 W The power dissipated by R1 is 2.27 W and the power dissipated by R2 is 60.5 W