Question

Question 3:
You are given the task to choose materials for a portable easy charger.
Criteria for the design:
a. It should be wind powered
b. It should be able to produce current
You have the knowledge of:
• How to increase voltage in a generator
• How different components affect a circuit
Design the below details to make an appropriate design
(a) What parts will you use to generate the required electricity?
(Specify what metal the wire should be made of.)
(b) The magnet of your generator cannot be replaced. What else can you do to
increase the voltage?
(c) Your bulb requires a 0.2A to work and your generator produces a 0.8V of
electricity. The wires have a resistance of 5 ohms. Will your bulb work? (show
calculation and explain)
(d) The cost of making the whole machine is Rs. 300 and the person using it will save
Rs. 10 per month. What will be his payback time?
(Show formula and calculations)

Answer 1

Answer:

It should be able to produce current

You have the knowledge of:

• How to increase voltage in a generator

• How different components affect a circuit

Design the below details to make an appropriate design

(a) What parts will you use to generate the required electricity?

(Specify what metal the wire should be made of.)

(b) The magnet of your generator cannot be replaced. What else can you do to