Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 707 · 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 unit measures the flow of charge? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
2. 2.📏 How many milliamperes (mA) is 0.24 A?
3. 3.📏 How many kilowatts (kW) is 1800 W? =
4. 4.Which of these is measured in amperes (A)? (a) resistance (b) power (c) the flow of charge (d) voltage
5. 5.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a bigger tank (c) a narrow pipe (d) the flow of water
6. 6.📏 How many watts (W) is 4 kW?
7. 7.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
8. 8.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) power (d) energy used each second
9. 9.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
10. 10.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
11. 11.Which of these is measured in watts (W)? (a) the push of a cell (b) power (c) resistance (d) the flow of charge
12. 12.True or false: the voltmeter measures current. (a) False (b) True
13. 13.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
14. 14.📏 Which unit measures power? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
15. 15.True or false: the voltmeter measures voltage. (a) True (b) False
16. 16.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
17. 17.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
18. 18.📏 How many watts (W) is 1.1 kW?
19. 19.True or false: current is measured in volts (V). (a) False (b) True
20. 20.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) how much a part resists (d) resistance
21. 21.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
22. 22.True or false: voltage is measured in watts (W). (a) True (b) False
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.📏 How many kilo-ohms (kΩ) is 9300 Ω? =
25. 25.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 10 (c) 60 (d) 1000
26. 26.Which of these is measured in volts (V)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) resistance
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
28. 28.True or false: how much a part resists is measured in ohms (Ω). (a) False (b) True
29. 29.📏 How many watts (W) is 0.6 kW?
30. 30.📏 How many kilo-ohms (kΩ) is 2300 Ω? =
31. 31.Which of these is measured in watts (W)? (a) voltage (b) energy used each second (c) the flow of charge (d) resistance
32. 32.True or false: power is measured in amperes (A). (a) True (b) False
33. 33.📏 How many kilowatts (kW) is 250 W? =
34. 34.📏 How many amperes (A) is 2140 mA? =
35. 35.True or false: the ammeter measures voltage. (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 0.34 A?
37. 37.True or false: the ammeter is joined in series. (a) False (b) True
38. 38.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) resistance (d) current
39. 39.📏 How many amperes (A) is 1850 mA? =
40. 40.📏 How many milliamperes (mA) is 2.3 A?

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