Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 189 · 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 2.62 A?
2. 2.True or false: power is measured in watts (W). (a) True (b) False
3. 3.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
4. 4.📏 How many amperes (A) is 2930 mA? =
5. 5.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
6. 6.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) current (d) energy used each second
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.True or false: power is measured in volts (V). (a) True (b) False
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 10 (c) 100 (d) 1000
10. 10.True or false: voltage is measured in amperes (A). (a) True (b) False
11. 11.Which of these is measured in watts (W)? (a) current (b) how much a part resists (c) the push of a cell (d) power
12. 12.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
13. 13.True or false: the voltmeter measures current. (a) False (b) True
14. 14.📏 How many ohms (Ω) is 9.6 kΩ?
15. 15.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
16. 16.📏 How many amperes (A) is 820 mA? =
17. 17.True or false: the voltmeter measures voltage. (a) True (b) False
18. 18.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
19. 19.📏 How many milliamperes (mA) is 0.35 A?
20. 20.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
21. 21.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
22. 22.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a bigger tank (c) the water pressure (d) a narrow pipe
23. 23.📏 How many milliamperes (mA) is 2.7 A?
24. 24.True or false: energy used each second is measured in watts (W). (a) True (b) False
25. 25.True or false: resistance is measured in watts (W). (a) True (b) False
26. 26.True or false: the ammeter measures voltage. (a) True (b) False
27. 27.True or false: the voltmeter is joined across a part. (a) False (b) True
28. 28.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) resistance (d) the flow of charge
29. 29.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the pipe colour (c) a narrow pipe (d) the flow of water
30. 30.📏 How many ohms (Ω) is 5.4 kΩ?
31. 31.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
32. 32.True or false: the flow of charge is measured in volts (V). (a) False (b) True
33. 33.Which of these is measured in volts (V)? (a) voltage (b) the flow of charge (c) current (d) energy used each second
34. 34.📏 How many watts (W) is 1.6 kW?
35. 35.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) current (d) how much a part resists
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many kilowatts (kW) is 4800 W? =
38. 38.📏 How many amperes (A) is 2980 mA? =
39. 39.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) voltage (d) resistance
40. 40.📏 Which unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)

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