Question

5. The heating coils in heating appliances converts electrical energy into
heat energy: -
a. Name the substance suitable for making them.
b. Write any two characteristics of this substance.
(3)
6. 2400J of heat is produced by passing electric current through a conductor
of resistance 2002 for 5 minutes.
a. Find the current through the conductor?
b. What potential difference is applied across the conductor?
c. Calculate the quantity of charge through the conductor during this
time.
(3X2)
7. Calculate the heat developed when 3A current flows through an electric
iron box design to work under 230v for half an hour.
ASSIGNMENT
Write any two electrical heating devices without heating coil. Find
out how heat energy is produced in these devices​

Answer 1

Answer:

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