Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 183 · 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 ohms (Ω)? (a) the push of a cell (b) energy used each second (c) resistance (d) power
2. 2.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
5. 5.True or false: how much a part resists is measured in volts (V). (a) False (b) True
6. 6.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
7. 7.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) resistance (d) current
8. 8.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
9. 9.True or false: the ammeter measures voltage. (a) True (b) False
10. 10.📏 How many kilo-ohms (kΩ) is 1500 Ω? =
11. 11.📏 How many ohms (Ω) is 2.1 kΩ?
12. 12.📏 How many watts (W) is 2.4 kW?
13. 13.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
14. 14.📏 How many milliamperes (mA) is 1.68 A?
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
16. 16.📏 How many amperes (A) is 1240 mA? =
17. 17.True or false: the flow of charge is measured in volts (V). (a) True (b) False
18. 18.True or false: the voltmeter is joined in series. (a) True (b) False
19. 19.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) the push of a cell (d) resistance
20. 20.True or false: the voltmeter measures current. (a) False (b) True
21. 21.📏 How many milliamperes (mA) is 1.49 A?
22. 22.True or false: the voltmeter is joined across a part. (a) True (b) False
23. 23.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
24. 24.📏 How many amperes (A) is 660 mA? =
25. 25.True or false: energy used each second is measured in watts (W). (a) True (b) False
26. 26.True or false: the ammeter is joined across a part. (a) True (b) False
27. 27.Which of these is measured in volts (V)? (a) voltage (b) energy used each second (c) current (d) how much a part resists
28. 28.📏 How many amperes (A) is 1990 mA? =
29. 29.Which of these is measured in ohms (Ω)? (a) power (b) how much a part resists (c) the push of a cell (d) the flow of charge
30. 30.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
31. 31.📏 How many milliamperes (mA) is 1.98 A?
32. 32.True or false: voltage is measured in watts (W). (a) True (b) False
33. 33.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
34. 34.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water tank lid (d) the water pressure
36. 36.📏 How many kilo-ohms (kΩ) is 9300 Ω? =
37. 37.📏 How many watts (W) is 3.2 kW?
38. 38.True or false: voltage is measured in ohms (Ω). (a) True (b) False
39. 39.📏 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
40. 40.📏 How many kilowatts (kW) is 3000 W? =

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