Unit Test Answers

✔ voltagecurrentresistance

voltagecurrent✔ resistance

voltageresistance✔ current

✔ 0.25100202.5

According to Ohm’s law, determine the calculated current for these values in Table A. voltage = 5 V, resistance = 20 Ω: A voltage = 20 V, resistance = 20 Ω: A voltage = 50 V, resistance = 20 Ω: A

0.02✔ 0.252.525

Examine Table B then read the statement and choose the best responses. As the resistance increased under 25 V, the current . Compared to calculated currents, experimental currents proved to be . Currents varied proportionally according to resistance: 10 Ω of resistance produced a current of A, while 100 Ω of resistance produced a current of A.

Perform calculations using the circuit illustrated. Round all the numerical answers to the tenths place. The total resistance in the circuit is Ω. The expected current at point A is A. At what point in the circuit will the current be the lowest (A, B, C, or D)?

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A simple circuit within a laptop has a single resistor with a resistance of 0.1 Ω and requires a current of 50 mA. Select the voltage that would allow the computer to function correctly.

A circuit in Mike’s home is almost at maximum current. If it is a 120 V circuit with about 1/3 of an amp available to safely use, which bulb would be the maximum wattage Mike could use?

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0.010.10✔ 1.010

lower✔ the samehigher

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25025✔ 2.50.25

0.2510020✔ 2.5