Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 867 · 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.📏 How many milliamperes (mA) is 1.79 A?
2. 2.📏 How many ohms (Ω) is 7.5 kΩ?
3. 3.📏 How many watts (W) is 4.7 kW?
4. 4.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
7. 7.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) voltage (d) current
8. 8.📏 How many milliamperes (mA) is 1.91 A?
9. 9.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
10. 10.True or false: the voltmeter measures voltage. (a) True (b) False
11. 11.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
12. 12.📏 How many kilo-ohms (kΩ) is 400 Ω? =
13. 13.True or false: current is measured in watts (W). (a) False (b) True
14. 14.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
15. 15.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) voltage
16. 16.📏 How many amperes (A) is 2500 mA? =
17. 17.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
18. 18.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
19. 19.True or false: the voltmeter measures current. (a) False (b) True
20. 20.True or false: current is measured in amperes (A). (a) False (b) True
21. 21.📏 How many ohms (Ω) is 5.5 kΩ?
22. 22.Which of these is measured in watts (W)? (a) the flow of charge (b) voltage (c) power (d) how much a part resists
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
25. 25.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
26. 26.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) how much a part resists (d) the flow of charge
27. 27.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
28. 28.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) voltage (d) the push of a cell
29. 29.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
30. 30.True or false: the voltmeter is joined across a part. (a) False (b) True
31. 31.True or false: voltage is measured in amperes (A). (a) True (b) False
32. 32.📏 How many ohms (Ω) is 6.6 kΩ?
33. 33.True or false: voltage is measured in volts (V). (a) True (b) False
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
35. 35.True or false: the voltmeter is joined in series. (a) True (b) False
36. 36.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
37. 37.Which of these is measured in volts (V)? (a) the push of a cell (b) current (c) power (d) how much a part resists
38. 38.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
39. 39.📏 How many kilowatts (kW) is 4050 W? =
40. 40.📏 How many watts (W) is 2.9 kW?

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