Question

The chart shows the voltage of four electric currents.

Answer 1

Answer:

b

Explanation:

Answer 2

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

$I=\frac{q}{t}$

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.