The answer here could be pressure vs. temperature.
Think of PV=nRT. T is related to P the same way as n is (assuming all other variables are kept constant).
Answer:
(i) When a battery is connected inseries to two long parallel wires, the currents in the two wires will be in opposite directions. Due to which a force of repulsion will be acting between them and they are moving further apart.
(ii) When a battery is connected in parallel to two long parallel wires, the currents in the two wires will be in same direction. Due to it, a force of attraction will be acting between them and they are coming closer to each other.
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This collects light, and bends it into focus.
Name the element and explain why it is unusual:
a)A liquid metal
b)A non-metal that conducts electricity
Answer:
the rigid outer part of the earth, consisting of the crust and upper mantle.
Explanation: