Physics equations/21-Circuits, Bioelectricity, and DC Instruments/Q:circuits

equations for this quiz  Solutions(pdf)   /Testbank/

A
{An ideal 5.2 V voltage source is connected to two resistors in parallel series. One is 1.2$$k\Omega$$, and the other is 2.8 $$k\Omega$$. What is the current through the larger resistor? -a) 0.7 mA. -b) 0.9 mA. -c) 1.1 mA. +d) 1.3 mA. -e) 1.5 mA.
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{A 7.7 ohm resistor is connected in series to a pair of 5.8 ohm resistors that are in parallel. What is the net resistance? -a) 6.1 ohms. -b) 7 ohms. -c) 8 ohms. -d) 9.2 ohms. +e) 10.6 ohms.
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{Two 8 ohm resistors are connected in parallel. This combination is then connected in series to a 6.6 ohm resistor. What is the net resistance? -a) 9.2 ohms. +b) 10.6 ohms. -c) 12.2 ohms. -d) 14 ohms. -e) 16.1 ohms.
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{An ideal 7.9 volt battery is connected to a 0.09 ohm resistor. To measure the current an ammeter with a resistance of 20$$m\Omega$$ is used. What current does the ammeter actually read? +a) 71.8 A. -b) 82.6 A. -c) 95 A. -d) 109.2 A. -e) 125.6 A.
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{A battery has an emf of 5.3 volts, and an internal resistance of 326 $$k\Omega$$. It is connected to a 3 $$M\Omega$$ resistor. What power is developed in the 3 $$M\Omega$$ resistor? -a) 5.01 $$\mu$$W. -b) 5.76 $$\mu$$W. -c) 6.62 $$\mu$$W. +d) 7.62 $$\mu$$W. -e) 8.76 $$\mu$$W.
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