Unit 18

Units/Symbols

100

What are the SI units for electrical current?

Amps (A)

200

Units for power?

Watts (W)

300

Symbol used to represent current?

I

400

What is the greek letter used to represent ohms?

Omega

500

Units for Capacitance

Farads (F)

Equations

100

Equation for capacitors in parallel?

Ct = C1 + C2 + C3

200

Equation for resistors in parallel?

1/Rt = 1/R1 + 1/R2 + 1/R3

300

What is Ohm's Law

V = IR

400

What is the equation for Capacitors in series?

1/Ct = 1/C + 1/C + 1/C

500

What is the Power equation?

P=IV

Theory

100

What happens to current in a series circuit when one bulb burns out?

The circuit will go out, because current can no longer flow.

200

Is the total current in a series circuit the same throughout the circuit in a series circuit or parallel circuit?

Series

300

Are light bulbs brighter when placed in series or parallel?

Parallel, because there is a greater voltage drop on each LED.

400

Do the probes of a multimeter need to be placed in parallel or series to measure current?

Series

500

Daily Double

Find the total resistance in the combination circuit on the board.