Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 508 · 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.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water tank lid (c) the water pressure (d) the pipe colour
3. 3.True or false: current is measured in amperes (A). (a) True (b) False
4. 4.📏 How many amperes (A) is 2340 mA? =
5. 5.📏 How many milliamperes (mA) is 0.79 A?
6. 6.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) current (c) resistance (d) voltage
7. 7.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the water pressure (c) the flow of water (d) a narrow pipe
8. 8.📏 How many kilo-ohms (kΩ) is 8600 Ω? =
9. 9.True or false: how much a part resists is measured in volts (V). (a) True (b) False
10. 10.📏 How many kilo-ohms (kΩ) is 4400 Ω? =
11. 11.Which of these is measured in watts (W)? (a) energy used each second (b) the flow of charge (c) voltage (d) resistance
12. 12.📏 How many amperes (A) is 2970 mA? =
13. 13.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
14. 14.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
15. 15.📏 How many ohms (Ω) is 5.5 kΩ?
16. 16.📏 How many milliamperes (mA) is 2.99 A?
17. 17.📏 Which unit measures current? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
18. 18.📏 How many amperes (A) is 1880 mA? =
19. 19.📏 How many kilowatts (kW) is 650 W? =
20. 20.True or false: power is measured in ohms (Ω). (a) False (b) True
21. 21.True or false: the voltmeter measures current. (a) False (b) True
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: the push of a cell is measured in volts (V). (a) True (b) False
24. 24.Which of these is measured in volts (V)? (a) the flow of charge (b) the push of a cell (c) resistance (d) power
25. 25.True or false: current is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many ohms (Ω) is 7.8 kΩ?
27. 27.True or false: the voltmeter is joined in series. (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) how much a part resists (d) power
30. 30.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) power (d) energy used each second
31. 31.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) voltage (d) resistance
32. 32.📏 How many ohms (Ω) is 4.3 kΩ?
33. 33.📏 How many milliamperes (mA) is 0.55 A?
34. 34.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) a bigger tank
35. 35.📏 How many ohms (Ω) is 2.5 kΩ?
36. 36.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
37. 37.True or false: how much a part resists is measured in watts (W). (a) False (b) True
38. 38.📏 How many watts (W) is 1.4 kW?
39. 39.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
40. 40.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter

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