LRC Circuits

Please refer to the attached file. How much should damping ( ) affect the result of the angular frequency for impulse response? (see attachment) In equation XVI.5, the details of the differentiation of I(t) are omitted. Take the derivative of I(t) and explicitly show how the voltage across the inductor L varies with time. ...continues

Energy supplied by battery

A typical 12-V car battery can deliver 7.5 x 10^5 C of charge. If the energy supplied by the battery could be converted entirely to kinetic energy, what speed would it give to a 1200-kg car?

electric potential

Hi. Can someone please explain to me what exactly the electric potential is and how it differs from electric potential energy -- not with equations, but in prose. (Or at least, with both.) I can read the equation, but I don't really understand what electric potential IS. What is its significance? Thank you!

Electric Field

Does the electric field only move in the + ---> - direction? Or does it depend on the charge, so that the electric field moves in a + ---> - direction for a + charge and moves in the - ---> + direction for a - charge? In the latter case, if a + charge is moving toward the - plate of a capacitor, is its direction negative sinc ...continues

Parallel plate capacitor

A parallel-plate capacitor is connected to a battery that maintains potential difference V between the plates. If the plates of the capacitor are pulled farther apart, do the following quantities increase, decrease, or remain the same? (a) Electric field between the plates; (b) charge on the plates; (c) capacitance; (d) ...continues

capacitor

Hi. Can someone please check these two answers? (a) seems very low and (b) seems very high to me. A 0.22 micro-F capacitor is charged by a 1.5-V battery. After being charged, the capacitor is connected to a small electric motor. Assuming 100% efficiency, (a) to what height can the motor lift a 5.0-g mass? (b) What initial vol ...continues

Capacitors

Two capacitors are connected in parallel. If a third capacitor is connected in parallel with the other two, does the equivalent capacitance increase, decrease, or remain the same? Explain.

Fuses & Circuits

A fuse is a device to protect a circuit from the effects of a large current. The fuse is a small strip of metal that burns through when the current exceeds a certain value, thus producing an open circuit. Should a fuse be connected in series or in parallel with the circuit it is intended to protect? Explain.

RC circuit

Hi. Can someone please walk me through how to do this problem? Consider an RC circuit with epsilon = 12.0 V, R = 175 ohms, and C = 55.7 micro-F. Find (a) the time constant for the circuit, (b) the maximum charge on the capacitor, and (c) the initial current in the circuit. Thank you.

capacitors

Hi. Can someone please walk me through how to do the following problem? Two capacitors, one 7.5 micro-F and the other 15 micro-F are connected in a series across a 12-V battery. (a) Find the equivalent capacitance of the two capacitors. (b) Which capacitor stores more charge. Explain. (c) Find the charge stored on each capaci ...continues