If you plug an electric hair dryer into a wall outlet and turn iton, current wil

Question

If you plug an electric hair dryer into a wall outlet and turn iton, current will flow through the wires inside the wall. Some powerwill be dissipated as heat in those wires. If you plug a second,identical hairdryer into the same outlet and turn it on, the amountof power wasted in the wires inside the wall will

A)increase by a factor of 2.
B)decrease by a factor of 2.
C)increase by a factor of 4.
D)decrease by a factor of 4.
E)change very little. Hint: The resistance R of the wires is fixed. The power lostin the wires is P=I^2R. When you plug in two hairdryers, thecurrent doubles, the power lost in the wires inside the wall goesup by a factor of 4.

A)increase by a factor of 2.
B)decrease by a factor of 2.
C)increase by a factor of 4.
D)decrease by a factor of 4.
E)change very little. Hint: The resistance R of the wires is fixed. The power lostin the wires is P=I^2R. When you plug in two hairdryers, thecurrent doubles, the power lost in the wires inside the wall goesup by a factor of 4. Hint: The resistance R of the wires is fixed. The power lostin the wires is P=I^2R. When you plug in two hairdryers, thecurrent doubles, the power lost in the wires inside the wall goesup by a factor of 4.

Explanation / Answer

A)increase by a factor of 2.
B)decrease by a factor of 2.
C)increase by a factor of4.
D)decrease by a factor of 4.
E)change very little. option C is correct.
The resistance R of the wires is fixed. The power lostin the wires is P=I^2R. When you plug in two hairdryers, thecurrent doubles, the power lost in the wires inside the wall goesup by a factor of 4. option C is correct.
The resistance R of the wires is fixed. The power lostin the wires is P=I^2R. When you plug in two hairdryers, thecurrent doubles, the power lost in the wires inside the wall goesup by a factor of 4.

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