Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 984 · 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.📏 How many amperes (A) is 980 mA? =
2. 2.True or false: the ammeter is joined across a part. (a) True (b) False
3. 3.True or false: the voltmeter measures voltage. (a) False (b) True
4. 4.📏 Which unit measures voltage? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
5. 5.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) energy used each second (d) resistance
6. 6.📏 Which unit measures power? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
7. 7.True or false: how much a part resists is measured in volts (V). (a) False (b) True
8. 8.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) power (d) voltage
9. 9.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) voltage (c) how much a part resists (d) power
10. 10.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour
11. 11.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
12. 12.True or false: the voltmeter measures current. (a) False (b) True
13. 13.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
14. 14.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
15. 15.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
16. 16.True or false: the ammeter measures current. (a) False (b) True
17. 17.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
18. 18.📏 How many ohms (Ω) is 2.2 kΩ?
19. 19.True or false: voltage is measured in volts (V). (a) False (b) True
20. 20.📏 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
21. 21.True or false: power is measured in amperes (A). (a) True (b) False
22. 22.Which of these is measured in watts (W)? (a) voltage (b) power (c) how much a part resists (d) the flow of charge
23. 23.True or false: voltage is measured in ohms (Ω). (a) True (b) False
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 10 (d) 100
25. 25.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
26. 26.True or false: the ammeter measures voltage. (a) False (b) True
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
28. 28.📏 How many kilo-ohms (kΩ) is 8100 Ω? =
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.True or false: the voltmeter is joined in series. (a) True (b) False
31. 31.📏 How many milliamperes (mA) is 2.22 A?
32. 32.True or false: energy used each second is measured in amperes (A). (a) False (b) True
33. 33.Which of these is measured in amperes (A)? (a) power (b) the flow of charge (c) resistance (d) the push of a cell
34. 34.True or false: the flow of charge is measured in watts (W). (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
36. 36.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) the flow of charge (d) voltage
37. 37.True or false: power is measured in volts (V). (a) True (b) False
38. 38.📏 How many amperes (A) is 550 mA? =
39. 39.📏 How many kilowatts (kW) is 100 W? =
40. 40.📏 How many milliamperes (mA) is 0.27 A?

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