Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 449 · 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 kilowatts (kW) is 3150 W? =
2. 2.True or false: power is measured in watts (W). (a) True (b) False
3. 3.True or false: the ammeter measures voltage. (a) True (b) False
4. 4.True or false: the voltmeter is joined across a part. (a) True (b) False
5. 5.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) the push of a cell (d) power
6. 6.True or false: the ammeter measures current. (a) True (b) False
7. 7.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) energy used each second (d) power
8. 8.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
9. 9.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
10. 10.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
11. 11.True or false: voltage is measured in amperes (A). (a) False (b) True
12. 12.📏 Which unit measures power? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
13. 13.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) the push of a cell
14. 14.📏 How many milliamperes (mA) is 2.59 A?
15. 15.📏 How many amperes (A) is 1520 mA? =
16. 16.📏 How many watts (W) is 1 kW?
17. 17.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
19. 19.📏 How many watts (W) is 0.8 kW?
20. 20.Which of these is measured in watts (W)? (a) voltage (b) current (c) resistance (d) energy used each second
21. 21.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the tap handle (d) the pipe colour
22. 22.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
23. 23.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
24. 24.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
25. 25.📏 Which unit measures resistance? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
26. 26.True or false: current is measured in amperes (A). (a) True (b) False
27. 27.📏 How many kilo-ohms (kΩ) is 3400 Ω? =
28. 28.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
30. 30.📏 How many milliamperes (mA) is 1.35 A?
31. 31.📏 How many ohms (Ω) is 5.2 kΩ?
32. 32.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) the flow of water (c) a narrow pipe (d) the pipe colour
33. 33.Which of these is measured in volts (V)? (a) the flow of charge (b) how much a part resists (c) resistance (d) voltage
34. 34.True or false: voltage is measured in volts (V). (a) False (b) True
35. 35.True or false: current is measured in watts (W). (a) True (b) False
36. 36.📏 How many ohms (Ω) is 6 kΩ?
37. 37.📏 How many amperes (A) is 380 mA? =
38. 38.True or false: the ammeter is joined across a part. (a) False (b) True
39. 39.True or false: the voltmeter measures voltage. (a) False (b) True
40. 40.True or false: energy used each second is measured in volts (V). (a) False (b) True

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