Why is it impractical to connect an electric bulb and an electric heater in series?
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Solution
Electric bulb and an electric heater in series:
Connecting an electric light bulb and an electric heater in series is impractical because they will not receive the currents and voltages that they require.
The resistances of the heater and the bulb differ, and the potential drop will increase as the resistances increases.
If they are used in series the effective resistance will increase as a result the current will fall, and therefore the power through each device will also drop.
And another reason is that if one appliance blows a fuse, the others will not turn on. And they also require currents of widely varying levels to function properly.