Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 948 · 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.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) the flow of charge (d) resistance
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.📏 How many amperes (A) is 2930 mA? =
4. 4.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) voltage (d) current
5. 5.True or false: the voltmeter measures current. (a) False (b) True
6. 6.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
7. 7.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
8. 8.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
9. 9.Which of these is measured in ohms (Ω)? (a) voltage (b) the flow of charge (c) how much a part resists (d) current
10. 10.📏 How many milliamperes (mA) is 2.16 A?
11. 11.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) power (d) energy used each second
12. 12.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures how much a part resists? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
14. 14.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
16. 16.📏 How many ohms (Ω) is 6.6 kΩ?
17. 17.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
18. 18.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
19. 19.True or false: the voltmeter is joined in series. (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) resistance (b) the flow of charge (c) the push of a cell (d) current
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
22. 22.True or false: the push of a cell is measured in volts (V). (a) False (b) True
23. 23.True or false: the ammeter measures voltage. (a) True (b) False
24. 24.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) the pipe colour (d) a narrow pipe
25. 25.True or false: power is measured in watts (W). (a) True (b) False
26. 26.📏 How many kilowatts (kW) is 3100 W? =
27. 27.📏 How many kilo-ohms (kΩ) is 1300 Ω? =
28. 28.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
29. 29.Which of these is measured in watts (W)? (a) power (b) resistance (c) the flow of charge (d) current
30. 30.📏 How many milliamperes (mA) is 0.44 A?
31. 31.📏 How many amperes (A) is 1900 mA? =
32. 32.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) energy used each second (d) resistance
33. 33.📏 How many amperes (A) is 960 mA? =
34. 34.📏 How many kilowatts (kW) is 5000 W? =
35. 35.True or false: the ammeter is joined in series. (a) False (b) True
36. 36.True or false: the push of a cell is measured in ohms (Ω). (a) False (b) True
37. 37.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
38. 38.📏 How many watts (W) is 0.2 kW?
39. 39.📏 How many milliamperes (mA) is 2.76 A?
40. 40.📏 How many ohms (Ω) is 2 kΩ?

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