# Question

A small toy car draws a 0.50-mA current from a 3.0-V NiCd (nickel– cadmium) battery. In 10 min of operation,

(a) How much charge flows through the toy car, and

(b) How much energy is lost by the battery?

(a) How much charge flows through the toy car, and

(b) How much energy is lost by the battery?

## Answer to relevant Questions

Use Kirchhoff’s loop theorem to explain why a 60-W lightbulb produces more light than one rated at 100 W when they are connected in series to a 120-V source. Explain clearly, using Kirchhoff’s laws, why the resistance of an ideal voltmeter is infinite. Light bulbs are labeled with their power output. For example, when a lightbulb is labeled 60 W, it is assumed that the bulb is connected to a 120- V source. Suppose you have two bulbs. A60- W bulb is followed by a 40- W bulb ...Suppose that the resistor arrangement in Fig. 18.28 is connected to a 12-V battery. What will be (a) The current in each resistor, (b) The voltage drop across each resistor, and (c) The total power delivered? Use Kirchhoff’s loop theorem to find the current in each resistor in Fig. 18.30.Post your question

0