Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 896 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
2. 2.📏 How many kilo-ohms (kΩ) is 3700 Ω? =
3. 3.📏 How many ohms (Ω) is 4.4 kΩ?
4. 4.📏 How many kilo-ohms (kΩ) is 8400 Ω? =
5. 5.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
6. 6.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) energy used each second (d) the flow of charge
7. 7.Which of these is measured in amperes (A)? (a) the push of a cell (b) current (c) resistance (d) power
8. 8.📏 Which unit measures the push of a cell? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
9. 9.Which of these is measured in volts (V)? (a) current (b) power (c) the flow of charge (d) the push of a cell
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
11. 11.📏 How many kilowatts (kW) is 2550 W? =
12. 12.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the water pressure (c) the pipe colour (d) the tap handle
13. 13.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the pipe colour (d) the flow of water
15. 15.True or false: the voltmeter measures current. (a) False (b) True
16. 16.📏 How many ohms (Ω) is 2.2 kΩ?
17. 17.True or false: power is measured in volts (V). (a) False (b) True
18. 18.📏 How many milliamperes (mA) is 0.32 A?
19. 19.📏 Which unit measures current? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
20. 20.Which of these is measured in watts (W)? (a) current (b) voltage (c) the flow of charge (d) power
21. 21.True or false: energy used each second is measured in volts (V). (a) True (b) False
22. 22.Which of these is measured in volts (V)? (a) power (b) current (c) voltage (d) energy used each second
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.📏 Which unit measures power? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
25. 25.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) the push of a cell (d) how much a part resists
26. 26.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
27. 27.📏 How many milliamperes (mA) is 2.01 A?
28. 28.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
29. 29.📏 How many ohms (Ω) is 9.4 kΩ?
30. 30.📏 How many watts (W) is 0.1 kW?
31. 31.📏 How many amperes (A) is 2050 mA? =
32. 32.📏 How many amperes (A) is 2070 mA? =
33. 33.True or false: the ammeter is joined in series. (a) True (b) False
34. 34.True or false: the ammeter measures current. (a) True (b) False
35. 35.Which of these is measured in ohms (Ω)? (a) power (b) voltage (c) energy used each second (d) resistance
36. 36.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
37. 37.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
38. 38.📏 How many kilo-ohms (kΩ) is 2000 Ω? =
39. 39.📏 How many amperes (A) is 70 mA? =
40. 40.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter

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