Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 942 · 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.True or false: the voltmeter is joined across a part. (a) False (b) True
2. 2.True or false: current is measured in amperes (A). (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 1.61 A?
4. 4.📏 How many ohms (Ω) is 4.5 kΩ?
5. 5.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) how much a part resists (d) power
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
7. 7.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) current (d) how much a part resists
8. 8.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
9. 9.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
10. 10.📏 How many amperes (A) is 2900 mA? =
11. 11.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
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 ohms (Ω)? (a) current (b) resistance (c) energy used each second (d) voltage
14. 14.📏 How many watts (W) is 0.7 kW?
15. 15.📏 How many milliamperes (mA) is 1.15 A?
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) the pipe colour
17. 17.True or false: power is measured in watts (W). (a) False (b) True
18. 18.True or false: the voltmeter measures voltage. (a) True (b) False
19. 19.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) energy used each second
20. 20.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
21. 21.True or false: power is measured in ohms (Ω). (a) True (b) False
22. 22.📏 How many amperes (A) is 1320 mA? =
23. 23.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) the flow of charge (d) voltage
24. 24.📏 How many kilo-ohms (kΩ) is 8900 Ω? =
25. 25.True or false: voltage is measured in volts (V). (a) False (b) True
26. 26.📏 How many amperes (A) is 2540 mA? =
27. 27.True or false: the ammeter measures voltage. (a) True (b) False
28. 28.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
29. 29.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
30. 30.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) how much a part resists (d) power
31. 31.📏 How many ohms (Ω) is 7.4 kΩ?
32. 32.📏 How many milliamperes (mA) is 1.44 A?
33. 33.True or false: energy used each second is measured in amperes (A). (a) False (b) True
34. 34.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 1000 (d) 60
35. 35.📏 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
36. 36.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) current (d) energy used each second
37. 37.📏 How many amperes (A) is 1630 mA? =
38. 38.True or false: energy used each second is measured in watts (W). (a) True (b) False
39. 39.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
40. 40.📏 How many kilowatts (kW) is 1000 W? =

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