The chart shows the voltage of four electric currents.
2 answers:
Answer:
Current X has a lower potential difference than Current Y.
Explanation:
The table is as follows:
Current Volts (V)
W 9.0
X 1.5
Y 3.0
Z 4.5
There are two quantities represented in the table:
1) Current: the current is the rate of flow of electric charge in a circuit. It is given by
where q is the amount of charge that passes a given point of a circuit in a time t. It is measured in Ampere (A).
2) Potential difference: the potential difference is the difference in electric potential between two points of a circuit. The potential difference is responsible for "pushing" the electrons through the circuit and producing a current. It is measured in Volts (V).
From the table, we see that
Current X has a lower potential difference (1.5 Volts) than Current Y (3.0 Volts)
So the correct choice is
Current X has a lower potential difference than Current Y.
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The question is incomplete. Here is the entire question.
A jetboat is drifting with a speed of 5.0m/s when the driver turns on the motor. The motor runs for 6.0s causing a constant leftward acceleration of magnitude 4.0m/s². What is the displacement of the boat over the 6.0 seconds time interval?
Answer: Δx = - 42m
Explanation: The jetboat is moving with an acceleration during the time interval, so it is a <u>linear</u> <u>motion</u> <u>with</u> <u>constant</u> <u>acceleration</u>.
For this "type" of motion, displacement (Δx) can be determined by:
is the initial velocity
a is acceleration and can be positive or negative, according to the referential.
For Referential, let's assume rightward is positive.
Calculating displacement:
= - 42
Displacement of the boat for t=6.0s interval is = - 42m, i.e., 42 m to the left.