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Beath High School - Int 1 Physics1 Physics Ohm’s Law Questions and Answers.

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Presentation on theme: "Beath High School - Int 1 Physics1 Physics Ohm’s Law Questions and Answers."— Presentation transcript:

1 Beath High School - Int 1 Physics1 Physics Ohm’s Law Questions and Answers

2 Beath High School - Int 1 Physics2 1.A resistor has a voltage across it of 12 volts and a current through it of 2.5 amperes. Calculate the resistance of the resistor. resistance = voltage current = 4.8  =

3 Beath High School - Int 1 Physics3 2.A voltage of 6 volts is across a resistor where the current is 0.5 amperes. What is the value of the resistor? resistance = voltage current = 12  =

4 Beath High School - Int 1 Physics4 3.Calculate the resistance of a component when a voltage of 24 V causes a current of 0.1 amperes. resistance = voltage current = 240  =

5 Beath High School - Int 1 Physics5 4.If a current of 2 amperes exists through a lamp when it has 12 volts across it, what is the resistance of the lamp? resistance = voltage current 12 2 = 6  =

6 Beath High School - Int 1 Physics6 5.A torch bulb is marked "6 V, 0.25 A". Calculate the resistance of the bulb. resistance = voltage current = 24  =

8 Beath High School - Int 1 Physics8 7. Find the values of the resistors in the circuit below. V 2 V2 V 0.25 A VV 3 V3 V5 V5 V R1R1 R2R2 R3R3 R 1 = V I = 8  = R 2 = V I = 12  = R 3 = V I = 20  =

9 Beath High School - Int 1 Physics9 8.A resistor of resistance 50  is placed in a circuit. The voltage across it is measured as 12 volts. What is the current in the resistor? current = voltage resistance = 0.24 A=

10 Beath High School - Int 1 Physics10 9.A 15  resistor is connected to a 9.0 V battery. What is the current in the resistor? current = voltage resistance 9 15 = 0.60 A=

11 Beath High School - Int 1 Physics11 10.A 25  resistor is connected to a battery. The current in the resistor is 0.25 A. What is the voltage of the battery? voltage = current x resistance = 0.25 x 25 = 6.25 V

12 Beath High School - Int 1 Physics12 11.A 480  resistor is connected to a battery. The current in the resistor is 26 mA. What is the voltage of the battery? voltage = current x resistance = x 480 = V


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