Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 883 · 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 0.87 A?
2. 2.Which of these is measured in ohms (Ω)? (a) power (b) current (c) how much a part resists (d) voltage
3. 3.True or false: the ammeter measures voltage. (a) False (b) True
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
5. 5.Which of these is measured in amperes (A)? (a) the flow of charge (b) energy used each second (c) voltage (d) power
6. 6.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
8. 8.True or false: voltage is measured in ohms (Ω). (a) True (b) False
9. 9.Which of these is measured in amperes (A)? (a) power (b) energy used each second (c) current (d) how much a part resists
10. 10.True or false: energy used each second is measured in volts (V). (a) False (b) True
11. 11.📏 How many watts (W) is 1.4 kW?
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
13. 13.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) power (d) voltage
14. 14.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
15. 15.Which of these is measured in watts (W)? (a) power (b) current (c) how much a part resists (d) resistance
16. 16.True or false: energy used each second is measured in watts (W). (a) False (b) True
17. 17.True or false: the voltmeter measures voltage. (a) True (b) False
18. 18.📏 How many ohms (Ω) is 9.3 kΩ?
19. 19.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
20. 20.True or false: the ammeter is joined across a part. (a) False (b) True
21. 21.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 1000 (d) 60
22. 22.📏 How many kilowatts (kW) is 1100 W? =
23. 23.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
24. 24.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.📏 How many kilowatts (kW) is 3250 W? =
26. 26.📏 How many ohms (Ω) is 1.3 kΩ?
27. 27.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
28. 28.📏 How many amperes (A) is 2610 mA? =
29. 29.📏 How many ohms (Ω) is 5.3 kΩ?
30. 30.True or false: the flow of charge is measured in watts (W). (a) False (b) True
31. 31.📏 How many ohms (Ω) is 6.8 kΩ?
32. 32.True or false: current is measured in ohms (Ω). (a) False (b) True
33. 33.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
34. 34.True or false: resistance is measured in volts (V). (a) False (b) True
35. 35.True or false: the voltmeter is joined in series. (a) True (b) False
36. 36.📏 How many kilo-ohms (kΩ) is 2500 Ω? =
37. 37.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
38. 38.📏 How many watts (W) is 0.1 kW?
39. 39.📏 How many watts (W) is 0.7 kW?
40. 40.True or false: the flow of charge is measured in volts (V). (a) True (b) False

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