Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 510 · 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 current? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
2. 2.📏 How many ohms (Ω) is 6.9 kΩ?
3. 3.Which of these is measured in volts (V)? (a) resistance (b) power (c) current (d) the push of a cell
4. 4.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) resistance (d) voltage
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the water tank lid (d) the pipe colour
6. 6.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
7. 7.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
8. 8.📏 How many amperes (A) is 340 mA? =
9. 9.True or false: voltage is measured in amperes (A). (a) True (b) False
10. 10.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
11. 11.📏 How many kilo-ohms (kΩ) is 1800 Ω? =
12. 12.Which of these is measured in amperes (A)? (a) how much a part resists (b) power (c) energy used each second (d) the flow of charge
13. 13.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
14. 14.True or false: the voltmeter measures current. (a) False (b) True
15. 15.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) a bigger tank (c) the flow of water (d) the water pressure
16. 16.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the pipe colour (c) the flow of water (d) the water pressure
17. 17.📏 How many amperes (A) is 190 mA? =
18. 18.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
19. 19.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
20. 20.📏 How many watts (W) is 0.5 kW?
21. 21.True or false: resistance is measured in ohms (Ω). (a) False (b) True
22. 22.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
23. 23.True or false: the voltmeter measures voltage. (a) False (b) True
24. 24.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
25. 25.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
27. 27.True or false: current is measured in volts (V). (a) True (b) False
28. 28.📏 How many kilo-ohms (kΩ) is 3500 Ω? =
29. 29.📏 How many kilo-ohms (kΩ) is 6200 Ω? =
30. 30.📏 How many milliamperes (mA) is 0.93 A?
31. 31.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
32. 32.Which of these is measured in ohms (Ω)? (a) resistance (b) voltage (c) energy used each second (d) the flow of charge
33. 33.📏 How many kilowatts (kW) is 2100 W? =
34. 34.True or false: energy used each second is measured in watts (W). (a) True (b) False
35. 35.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
36. 36.📏 How many kilo-ohms (kΩ) is 3900 Ω? =
37. 37.📏 How many kilowatts (kW) is 1450 W? =
38. 38.📏 How many amperes (A) is 760 mA? =
39. 39.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
40. 40.Which of these is measured in watts (W)? (a) how much a part resists (b) power (c) resistance (d) voltage

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids