Electric Current â 1 Questions. Answer the following in complete
Electric Current â 1 Questions. Answer the following in complete
Electric Current â 1 Questions. Answer the following in complete
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NAME ________________________ period ___ DATE ______________<strong>Electric</strong> <strong>Current</strong> – 1<strong>Questions</strong>. <strong>Answer</strong> <strong>the</strong> <strong>follow<strong>in</strong>g</strong> <strong>in</strong> <strong>complete</strong> coherent sentences.1. What quantity is measured by a battery rat<strong>in</strong>g given <strong>in</strong> ampere-hours ( A h)?2. When an electric cell is connected to a circuit, electrons flow away from <strong>the</strong> negative term<strong>in</strong>al <strong>in</strong> <strong>the</strong>circuit. But with<strong>in</strong> <strong>the</strong> cell, electrons flow to <strong>the</strong> negative term<strong>in</strong>al. Expla<strong>in</strong>.3. When a flashlight is operated, what is be<strong>in</strong>g used up: battery current, battery voltage, battery energy,battery power, or battery resistance? Expla<strong>in</strong>.4. When you turn on a water faucet, <strong>the</strong> water usually flows immediately. You don’t have to wait for waterto flow from <strong>the</strong> faucet valve to <strong>the</strong> spout. Why not? Is <strong>the</strong> same th<strong>in</strong>g true when you connect a wire to <strong>the</strong>term<strong>in</strong>als of a battery?5. Can a copper wire and an alum<strong>in</strong>um wire of <strong>the</strong> same length have <strong>the</strong> same resistance? Expla<strong>in</strong>.
PROBLEMS.1. A service station charges a battery us<strong>in</strong>g a current of 6.7 A for 5.0 h. How much charge passes through <strong>the</strong>battery?2. What is <strong>the</strong> resistance of a toaster if 120 V produces a current of 4.2 A?3. What voltage will produce 0.25 A of current through a 3800 -resistor?4. A hair dryer draws 7.5 A when plugged <strong>in</strong>to a 120-V l<strong>in</strong>e. (a) What is its resistance? (b) How much chargepasses through it <strong>in</strong> 15 m<strong>in</strong>? (Assume direct current.)5. A 9.0-V battery is connected to a bulb whose resistance is 1.6 . How many electrons leave <strong>the</strong> battery perm<strong>in</strong>ute?6. A bird stands on a dc electric transmission l<strong>in</strong>e carry<strong>in</strong>g 2800 A (Fig. 18–34). The l<strong>in</strong>e has 2 .510resistance per meter, and <strong>the</strong> bird’s feet are 4.0 cm apart. What is <strong>the</strong> potential difference between <strong>the</strong> bird’sfeet?5