(a) A student wants to use an electric heater, an electric bulb and an electric fan simultaneously. How…
(a) A student wants to use an electric heater, an electric bulb and an electric fan simultaneously.
How should these gadgets be connected with the mains ? Justify your answer giving three reasons.
(b) What is an electric fuse ? How is it connected in a circuit ?
Solution
(a) These appliances/gadgets should be connected in parallel.
Justification:
These gadgets need current of widely different values to operate properly.
independent switching can be done for different appliances.
If any component fails, other gadgets may function.
All gadgets get the required voltage for their operation.
Effective resistance decreases hence heat loss minimizes.
(any three)
(b) It is a device which protects the circuit/appliance by stopping the flow of any unduly high current / safety device in electrical circuit.
It is connected in series with the device.