Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 777 · 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 amperes (A) is 970 mA? =
2. 2.Which of these is measured in ohms (Ω)? (a) energy used each second (b) how much a part resists (c) current (d) power
3. 3.True or false: current is measured in amperes (A). (a) False (b) True
4. 4.📏 How many milliamperes (mA) is 1.87 A?
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
6. 6.📏 How many kilowatts (kW) is 50 W? =
7. 7.True or false: the push of a cell is measured in volts (V). (a) False (b) True
8. 8.Which of these is measured in volts (V)? (a) energy used each second (b) resistance (c) how much a part resists (d) the push of a cell
9. 9.📏 How many watts (W) is 1.9 kW?
10. 10.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
11. 11.📏 How many watts (W) is 4.7 kW?
12. 12.True or false: the voltmeter is joined across a part. (a) False (b) True
13. 13.📏 How many milliamperes (mA) is 0.15 A?
14. 14.📏 How many milliamperes (mA) is 0.58 A?
15. 15.Which of these is measured in volts (V)? (a) power (b) voltage (c) current (d) energy used each second
16. 16.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
17. 17.📏 How many kilowatts (kW) is 1700 W? =
18. 18.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
19. 19.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
20. 20.True or false: the flow of charge is measured in volts (V). (a) False (b) True
21. 21.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
22. 22.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) a narrow pipe (c) the water pressure (d) the flow of water
23. 23.📏 How many milliamperes (mA) is 2.14 A?
24. 24.Which of these is measured in amperes (A)? (a) energy used each second (b) voltage (c) power (d) the flow of charge
25. 25.True or false: the ammeter measures voltage. (a) False (b) True
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
27. 27.True or false: the ammeter measures current. (a) False (b) True
28. 28.True or false: power is measured in watts (W). (a) True (b) False
29. 29.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
30. 30.True or false: voltage is measured in watts (W). (a) False (b) True
31. 31.True or false: energy used each second is measured in watts (W). (a) True (b) False
32. 32.📏 How many kilo-ohms (kΩ) is 8700 Ω? =
33. 33.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
34. 34.📏 How many ohms (Ω) is 6.2 kΩ?
35. 35.📏 How many kilo-ohms (kΩ) is 100 Ω? =
36. 36.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
37. 37.📏 How many amperes (A) is 1240 mA? =
38. 38.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
39. 39.Which of these is measured in watts (W)? (a) how much a part resists (b) current (c) resistance (d) power
40. 40.True or false: the voltmeter measures voltage. (a) False (b) True

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