Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 303 · 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) voltage (b) how much a part resists (c) current (d) resistance
2. 2.True or false: resistance is measured in volts (V). (a) True (b) False
3. 3.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
4. 4.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
5. 5.True or false: the voltmeter is joined in series. (a) True (b) False
6. 6.Which of these is measured in ohms (Ω)? (a) resistance (b) the flow of charge (c) energy used each second (d) current
7. 7.📏 How many watts (W) is 4.2 kW?
8. 8.True or false: voltage is measured in amperes (A). (a) True (b) False
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the water tank lid (d) the tap handle
10. 10.Which of these is measured in ohms (Ω)? (a) power (b) the flow of charge (c) how much a part resists (d) voltage
11. 11.True or false: the ammeter measures current. (a) True (b) False
12. 12.📏 How many amperes (A) is 1320 mA? =
13. 13.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) how much a part resists (d) the flow of charge
16. 16.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
17. 17.True or false: the ammeter measures voltage. (a) False (b) True
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the water pressure (c) the flow of water (d) a narrow pipe
19. 19.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
20. 20.📏 How many amperes (A) is 1600 mA? =
21. 21.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
22. 22.True or false: power is measured in ohms (Ω). (a) True (b) False
23. 23.Which of these is measured in volts (V)? (a) energy used each second (b) current (c) how much a part resists (d) voltage
24. 24.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
26. 26.📏 How many amperes (A) is 980 mA? =
27. 27.📏 How many watts (W) is 3.8 kW?
28. 28.📏 How many watts (W) is 0.3 kW?
29. 29.📏 How many watts (W) is 4.9 kW?
30. 30.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
31. 31.True or false: the ammeter is joined across a part. (a) False (b) True
32. 32.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
33. 33.📏 In the water-pipe picture of a circuit, current is like … (a) the pipe colour (b) the flow of water (c) the water pressure (d) a narrow pipe
34. 34.📏 How many amperes (A) is 780 mA? =
35. 35.📏 How many amperes (A) is 2680 mA? =
36. 36.True or false: the voltmeter measures voltage. (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 1 A?
38. 38.📏 How many kilowatts (kW) is 2200 W? =
39. 39.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
40. 40.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) the flow of charge

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