Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 994 · 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 unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
2. 2.True or false: the voltmeter measures current. (a) False (b) True
3. 3.📏 How many milliamperes (mA) is 1.74 A?
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
6. 6.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
7. 7.📏 How many watts (W) is 2.3 kW?
8. 8.True or false: energy used each second is measured in amperes (A). (a) True (b) False
9. 9.📏 How many milliamperes (mA) is 1.98 A?
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
11. 11.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) the push of a cell (d) energy used each second
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) resistance (d) the flow of charge
13. 13.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
14. 14.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 100 (c) 1024 (d) 1000
15. 15.📏 How many milliamperes (mA) is 2.32 A?
16. 16.📏 How many kilo-ohms (kΩ) is 3500 Ω? =
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 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
19. 19.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) the push of a cell (c) power (d) energy used each second
20. 20.📏 How many amperes (A) is 2900 mA? =
21. 21.📏 How many ohms (Ω) is 4.4 kΩ?
22. 22.True or false: the voltmeter is joined in series. (a) True (b) False
23. 23.True or false: the push of a cell is measured in volts (V). (a) True (b) False
24. 24.True or false: the push of a cell is measured in watts (W). (a) True (b) False
25. 25.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
26. 26.📏 How many milliamperes (mA) is 1.63 A?
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
28. 28.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
29. 29.True or false: voltage is measured in amperes (A). (a) True (b) False
30. 30.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
31. 31.📏 How many kilo-ohms (kΩ) is 7100 Ω? =
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) the flow of charge (c) voltage (d) resistance
33. 33.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
34. 34.True or false: the voltmeter measures voltage. (a) True (b) False
35. 35.Which of these is measured in watts (W)? (a) power (b) voltage (c) the push of a cell (d) current
36. 36.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
37. 37.📏 How many watts (W) is 1.9 kW?
38. 38.True or false: current is measured in amperes (A). (a) False (b) True
39. 39.True or false: the voltmeter is joined across a part. (a) False (b) True
40. 40.📏 How many kilowatts (kW) is 3550 W? =

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