Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 90 · 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 volts (V)? (a) how much a part resists (b) voltage (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.📏 How many ohms (Ω) is 1.2 kΩ?
4. 4.📏 How many ohms (Ω) is 1.6 kΩ?
5. 5.📏 How many ohms (Ω) is 8.3 kΩ?
6. 6.True or false: power is measured in watts (W). (a) True (b) False
7. 7.Which of these is measured in amperes (A)? (a) the flow of charge (b) how much a part resists (c) resistance (d) energy used each second
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.True or false: voltage is measured in volts (V). (a) False (b) True
10. 10.📏 How many milliamperes (mA) is 1.29 A?
11. 11.📏 How many milliamperes (mA) is 1.94 A?
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) power (d) the push of a cell
13. 13.📏 How many kilo-ohms (kΩ) is 7800 Ω? =
14. 14.True or false: the ammeter is joined in series. (a) True (b) False
15. 15.📏 How many ohms (Ω) is 8.7 kΩ?
16. 16.True or false: the flow of charge is measured in volts (V). (a) False (b) True
17. 17.True or false: the voltmeter measures voltage. (a) False (b) True
18. 18.True or false: the ammeter measures current. (a) False (b) True
19. 19.📏 How many kilo-ohms (kΩ) is 400 Ω? =
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: the push of a cell is measured in amperes (A). (a) False (b) True
22. 22.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) power (d) the push of a cell
23. 23.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) energy used each second (d) voltage
24. 24.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) power (c) the push of a cell (d) how much a part resists
26. 26.📏 How many kilo-ohms (kΩ) is 2100 Ω? =
27. 27.True or false: the push of a cell is measured in volts (V). (a) False (b) True
28. 28.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) current (d) the flow of charge
29. 29.True or false: resistance is measured in watts (W). (a) True (b) False
30. 30.True or false: energy used each second is measured in volts (V). (a) False (b) True
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
32. 32.True or false: power is measured in ohms (Ω). (a) True (b) False
33. 33.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
34. 34.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) how much a part resists (d) resistance
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) a narrow pipe (d) the water pressure
36. 36.True or false: how much a part resists is measured in watts (W). (a) True (b) False
37. 37.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
38. 38.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
39. 39.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter

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