Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 310 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.True or false: energy used each second is measured in watts (W). (a) False (b) True
2. 2.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) voltage (d) the flow of charge
5. 5.True or false: power is measured in volts (V). (a) True (b) False
6. 6.Which of these is measured in volts (V)? (a) power (b) the flow of charge (c) the push of a cell (d) how much a part resists
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the flow of water (d) the water pressure
8. 8.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the pipe colour (d) the water pressure
10. 10.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
11. 11.True or false: how much a part resists is measured in watts (W). (a) False (b) True
12. 12.📏 How many ohms (Ω) is 4.5 kΩ?
13. 13.📏 How many amperes (A) is 1480 mA? =
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
15. 15.True or false: the ammeter measures current. (a) False (b) True
16. 16.📏 How many watts (W) is 2.8 kW?
17. 17.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
18. 18.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) the push of a cell (d) energy used each second
19. 19.Which of these is measured in watts (W)? (a) power (b) the push of a cell (c) current (d) how much a part resists
20. 20.📏 How many amperes (A) is 800 mA? =
21. 21.True or false: the ammeter is joined across a part. (a) False (b) True
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) the flow of water (d) a narrow pipe
23. 23.📏 How many ohms (Ω) is 6.9 kΩ?
24. 24.📏 How many kilowatts (kW) is 3950 W? =
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.📏 How many milliamperes (mA) is 2.22 A?
27. 27.📏 How many kilo-ohms (kΩ) is 4300 Ω? =
28. 28.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
29. 29.📏 How many amperes (A) is 1760 mA? =
30. 30.True or false: the flow of charge is measured in volts (V). (a) False (b) True
31. 31.True or false: the voltmeter measures current. (a) False (b) True
32. 32.📏 How many milliamperes (mA) is 1.86 A?
33. 33.📏 How many kilowatts (kW) is 1500 W? =
34. 34.Which of these is measured in amperes (A)? (a) resistance (b) power (c) current (d) energy used each second
35. 35.📏 How many amperes (A) is 820 mA? =
36. 36.True or false: the ammeter measures voltage. (a) True (b) False
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 1000 (d) 10
38. 38.📏 How many ohms (Ω) is 0.1 kΩ?
39. 39.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) current
40. 40.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)

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