Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 598 · 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.True or false: the ammeter measures current. (a) False (b) True
2. 2.Which of these is measured in amperes (A)? (a) voltage (b) current (c) resistance (d) energy used each second
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
4. 4.📏 How many kilowatts (kW) is 3950 W? =
5. 5.📏 How many kilowatts (kW) is 4600 W? =
6. 6.True or false: the voltmeter is joined in series. (a) False (b) True
7. 7.True or false: the push of a cell is measured in volts (V). (a) False (b) True
8. 8.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) the flow of water (c) the water pressure (d) a narrow pipe
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
10. 10.📏 How many ohms (Ω) is 1.9 kΩ?
11. 11.📏 How many kilowatts (kW) is 2100 W? =
12. 12.True or false: power is measured in volts (V). (a) True (b) False
13. 13.True or false: voltage is measured in volts (V). (a) True (b) False
14. 14.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
15. 15.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
16. 16.True or false: the voltmeter measures voltage. (a) False (b) True
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: the ammeter is joined across a part. (a) True (b) False
19. 19.Which of these is measured in ohms (Ω)? (a) resistance (b) the push of a cell (c) energy used each second (d) power
20. 20.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) a narrow pipe (d) the water pressure
22. 22.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) current (d) voltage
23. 23.📏 How many kilo-ohms (kΩ) is 7300 Ω? =
24. 24.Which of these is measured in amperes (A)? (a) voltage (b) energy used each second (c) the flow of charge (d) the push of a cell
25. 25.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.📏 How many watts (W) is 0.9 kW?
28. 28.📏 How many watts (W) is 1.5 kW?
29. 29.📏 How many milliamperes (mA) is 0.41 A?
30. 30.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) power
32. 32.📏 How many watts (W) is 1.6 kW?
33. 33.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) power (d) the push of a cell
34. 34.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
35. 35.📏 How many ohms (Ω) is 4.7 kΩ?
36. 36.Which of these is measured in ohms (Ω)? (a) power (b) energy used each second (c) how much a part resists (d) the flow of charge
37. 37.True or false: the push of a cell is measured in watts (W). (a) True (b) False
38. 38.Which of these is measured in watts (W)? (a) energy used each second (b) the push of a cell (c) resistance (d) the flow of charge
39. 39.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
40. 40.📏 How many milliamperes (mA) is 0.79 A?

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