Circuit Quiz# 2

What does more current mean in an electrical circuit?

Electrical current is measured in ________, which is coulombs/sec (just like gallons per sec).

A device that uses more energy uses more current.

Voltage pushes electricity. More voltage = more current.

Batteries give voltage. The resistors use all of the electrical potential energy. This is why the voltage always equals 0 volts just before it reenters the battery.

Resistance slows down electricity. More resistance = ______ current.

With the same resistance (1 bulb), more voltage (2 batteries) causes more current (brighter).

With the same voltage (2 batteries), more resistance (2 bulbs) = less current (dimmer bulbs).

What is the formula for current (I) in terms of voltage (V) and resistance (R)?

How much current does a 12 V battery push through a 3 Ω resistor? V = 12 V, R = 3 Ω, I = ?