Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 534 · 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.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) energy used each second (d) current
2. 2.📏 Which unit measures current? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
4. 4.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the water pressure (c) a bigger tank (d) the flow of water
5. 5.True or false: energy used each second is measured in amperes (A). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the water pressure (d) the tap handle
7. 7.📏 How many amperes (A) is 2900 mA? =
8. 8.📏 How many amperes (A) is 680 mA? =
9. 9.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
10. 10.📏 How many ohms (Ω) is 3.1 kΩ?
11. 11.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) voltage
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
13. 13.Which of these is measured in watts (W)? (a) voltage (b) how much a part resists (c) resistance (d) energy used each second
14. 14.📏 How many amperes (A) is 880 mA? =
15. 15.True or false: current is measured in amperes (A). (a) True (b) False
16. 16.📏 How many kilowatts (kW) is 1700 W? =
17. 17.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
18. 18.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
19. 19.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) voltage (d) resistance
20. 20.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) how much a part resists (d) power
21. 21.True or false: how much a part resists is measured in watts (W). (a) True (b) False
22. 22.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
23. 23.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 1950 W? =
25. 25.📏 How many kilo-ohms (kΩ) is 7500 Ω? =
26. 26.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
27. 27.📏 How many milliamperes (mA) is 0.64 A?
28. 28.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
29. 29.True or false: the voltmeter measures voltage. (a) False (b) True
30. 30.True or false: the ammeter is joined across a part. (a) False (b) True
31. 31.📏 How many amperes (A) is 1740 mA? =
32. 32.📏 How many ohms (Ω) is 8.7 kΩ?
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
34. 34.True or false: the voltmeter is joined across a part. (a) False (b) True
35. 35.📏 How many watts (W) is 3.9 kW?
36. 36.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
37. 37.Which of these is measured in watts (W)? (a) voltage (b) power (c) current (d) the push of a cell
38. 38.📏 How many ohms (Ω) is 8.2 kΩ?
39. 39.📏 How many kilowatts (kW) is 900 W? =
40. 40.📏 How many kilowatts (kW) is 4950 W? =

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