Answer:
A circuit that has little or no resistance
Explanation:
Apex
The potential energy of the block is A) 490 J
Explanation:
The potential energy of an object is the energy possessed by the object due to its position in the gravitational field.
It is calculated as follows:

where
m is the mass of the object
g is the acceleration due to gravity
h is the height of the object above the ground
For the block in this problem, we have:
m = 10 kg

h = 5 m
Therefore, its potential energy is:

Learn more about potential energy:
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If there's any point in a circuit where the current has a choice
of which branch to take, then you have a <em>parallel circuit</em>.