Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 981 · 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) current (b) energy used each second (c) the push of a cell (d) resistance
2. 2.True or false: power is measured in ohms (Ω). (a) False (b) True
3. 3.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 1000 (d) 100
4. 4.True or false: the voltmeter is joined in series. (a) True (b) False
5. 5.True or false: energy used each second is measured in amperes (A). (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
7. 7.True or false: resistance is measured in amperes (A). (a) False (b) True
8. 8.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
9. 9.📏 How many kilowatts (kW) is 2250 W? =
10. 10.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
11. 11.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) the flow of charge (d) voltage
12. 12.True or false: the voltmeter measures voltage. (a) False (b) True
13. 13.📏 How many watts (W) is 0.8 kW?
14. 14.True or false: the ammeter is joined in series. (a) False (b) True
15. 15.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
16. 16.📏 How many kilowatts (kW) is 2650 W? =
17. 17.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) energy used each second (d) the flow of charge
18. 18.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
19. 19.True or false: the voltmeter is joined across a part. (a) False (b) True
20. 20.📏 How many ohms (Ω) is 2.7 kΩ?
21. 21.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
22. 22.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 10 (d) 60
23. 23.True or false: power is measured in watts (W). (a) True (b) False
24. 24.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 How many kilo-ohms (kΩ) is 2200 Ω? =
26. 26.True or false: energy used each second is measured in volts (V). (a) True (b) False
27. 27.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
28. 28.True or false: the voltmeter measures current. (a) True (b) False
29. 29.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
30. 30.True or false: the ammeter measures voltage. (a) True (b) False
31. 31.True or false: voltage is measured in volts (V). (a) False (b) True
32. 32.Which of these is measured in volts (V)? (a) current (b) how much a part resists (c) the push of a cell (d) the flow of charge
33. 33.True or false: the ammeter is joined across a part. (a) False (b) True
34. 34.Which of these is measured in watts (W)? (a) resistance (b) how much a part resists (c) the push of a cell (d) power
35. 35.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the water pressure (d) the flow of water
36. 36.📏 How many kilowatts (kW) is 2700 W? =
37. 37.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 Which unit measures how much a part resists? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
39. 39.Which of these is measured in watts (W)? (a) current (b) resistance (c) energy used each second (d) the flow of charge
40. 40.Which of these is measured in amperes (A)? (a) how much a part resists (b) energy used each second (c) current (d) power

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