Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 148 · 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: the push of a cell is measured in volts (V). (a) True (b) False
2. 2.📏 How many amperes (A) is 1630 mA? =
3. 3.📏 How many milliamperes (mA) is 2.16 A?
4. 4.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) the push of a cell
5. 5.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) energy used each second (d) resistance
6. 6.True or false: the ammeter is joined across a part. (a) False (b) True
7. 7.📏 How many milliamperes (mA) is 0.32 A?
8. 8.True or false: current is measured in watts (W). (a) False (b) True
9. 9.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
11. 11.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) resistance (d) the push of a cell
12. 12.True or false: the push of a cell is measured in watts (W). (a) True (b) False
13. 13.True or false: the voltmeter measures voltage. (a) False (b) True
14. 14.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
16. 16.📏 How many kilowatts (kW) is 950 W? =
17. 17.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
18. 18.True or false: the voltmeter is joined across a part. (a) True (b) False
19. 19.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
20. 20.Which of these is measured in volts (V)? (a) how much a part resists (b) current (c) resistance (d) voltage
21. 21.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
22. 22.📏 How many watts (W) is 2.8 kW?
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
24. 24.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
25. 25.True or false: voltage is measured in volts (V). (a) True (b) False
26. 26.📏 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
27. 27.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
28. 28.True or false: the ammeter measures current. (a) True (b) False
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
31. 31.Which of these is measured in watts (W)? (a) resistance (b) power (c) current (d) the push of a cell
32. 32.True or false: the ammeter is joined in series. (a) False (b) True
33. 33.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
34. 34.📏 How many amperes (A) is 1690 mA? =
35. 35.📏 How many kilowatts (kW) is 2400 W? =
36. 36.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
37. 37.📏 How many milliamperes (mA) is 1.11 A?
38. 38.📏 How many amperes (A) is 750 mA? =
39. 39.📏 How many watts (W) is 4.2 kW?
40. 40.Which of these is measured in watts (W)? (a) resistance (b) the push of a cell (c) voltage (d) energy used each second

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