Answer:
In parallel combination each appliance gets the full voltage.
If one appliance is switched on/of others are not affected.
The parallel circuit divide the current through the appliances.
In a parallel combination it is very easy to connect or disconnect a new appliance without affecting the working of other appliances.
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Explanation:
D is the answer
Velocity maybe negative or positive
while speed is always positive
It is a scaler because it’s only fully describes by a magnitude and a numerical alone