| Question |
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| Answer |
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| Define direct current (DC). |
Current flowing in ONE direction. |
| What are the 3 components of an electric current? |
Battery, conductor, Load/resistance |
| What does a voltmeter do? |
Measures the POTENTIAL DIFFERENCE between any two points in a circuit. |
| What does an ammeter do? |
Measures amps and is connected in series in the circuit. |
| What is the formula for OHM's Law? |
V = I x R |
| Define series circuit. |
Electric circuit whose component parts are arranged end-to-end so that the current passes consecutively through each part. |
| What is the formula for a volt circuit series? |
V(t) = V(1) + V(2) + V(3) |
| What is the formula for an amp circuit series? |
I(t) = I(1)/R = I(2)/R = I(3)/R |
| What is the formula for a ohm circuit series? |
R(t) = R(1) + R(2) + R(3) |
| Define parallel circuit. |
Component parts are connected as branches of main circuit so that current is divided among them. |
| Define power. |
The electric energy expended per second. |
| What is the formula for power? |
P = I*V |
| What is the UNIT for power? |
Watt |
| What is the formula for the amp parallel circuit? |
I = i1/R + i2/R + i3/R |
| What is the formula for the voltage parallel circuit? |
V = v1 = v2 = v3 |
| What is the formula for the resistance parallel circuit? |
R = r1 + r2 + r3 |
| What circuit device must be connected in parallel? |
Voltmeter |
| What are the required indicators on the x-ray exposure switch? |
Audible, Visible |
| Where in the basic x-ray circuit is the timer located? |
Between the exposure switch and step-up transformer |
Cardio Block2anatomy
